本發明屬于(yu)葉(xie)片(pian)結構模(mo)擬件，具體涉及一種(zhong)燃(ran)氣輪(lun)機(ji)透(tou)平葉(xie)片(pian)尾(wei)緣(yuan)劈(pi)縫可(ke)靠性試驗模(mo)擬件及方法(fa)。

背景技術：

1、為了(le)追(zhui)求更大的(de)功率和(he)更高(gao)的(de)效率，航(hang)空(kong)發動機與燃氣(qi)輪(lun)機的(de)透(tou)(tou)平(ping)(ping)(ping)進(jin)口溫(wen)度不斷(duan)提(ti)高(gao)，為保證透(tou)(tou)平(ping)(ping)(ping)的(de)安全(quan)穩定(ding)運行，在葉(xie)(xie)片(pian)尾(wei)(wei)緣(yuan)區(qu)(qu)域(yu)(yu)通常布(bu)置有劈(pi)縫結(jie)(jie)構(gou)以降低(di)(di)葉(xie)(xie)片(pian)溫(wen)度。受葉(xie)(xie)型(xing)的(de)影(ying)響，葉(xie)(xie)片(pian)尾(wei)(wei)緣(yuan)區(qu)(qu)域(yu)(yu)厚度較(jiao)(jiao)小，內部(bu)冷卻通道以及劈(pi)縫結(jie)(jie)構(gou)的(de)存(cun)在進(jin)一步降低(di)(di)了(le)葉(xie)(xie)片(pian)尾(wei)(wei)緣(yuan)區(qu)(qu)域(yu)(yu)的(de)厚度，使(shi)得該區(qu)(qu)域(yu)(yu)結(jie)(jie)構(gou)強度較(jiao)(jiao)低(di)(di)，同時，在溫(wen)度載荷、離心(xin)力載荷以及壓力載荷的(de)耦合作用下，尾(wei)(wei)緣(yuan)區(qu)(qu)域(yu)(yu)靠近(jin)葉(xie)(xie)根(gen)平(ping)(ping)(ping)臺處(chu)往(wang)往(wang)存(cun)在高(gao)應(ying)力區(qu)(qu)域(yu)(yu)，嚴重(zhong)影(ying)響透(tou)(tou)平(ping)(ping)(ping)葉(xie)(xie)片(pian)的(de)安全(quan)性(xing)。因此，設計燃氣(qi)輪(lun)機透(tou)(tou)平(ping)(ping)(ping)葉(xie)(xie)片(pian)尾(wei)(wei)緣(yuan)劈(pi)縫高(gao)溫(wen)模(mo)擬試驗(yan)件，并(bing)制定(ding)相(xiang)應(ying)的(de)試驗(yan)方法，對于獲得透(tou)(tou)平(ping)(ping)(ping)葉(xie)(xie)片(pian)尾(wei)(wei)緣(yuan)區(qu)(qu)域(yu)(yu)相(xiang)關數(shu)據，優化尾(wei)(wei)緣(yuan)劈(pi)縫相(xiang)應(ying)結(jie)(jie)構(gou)，保障透(tou)(tou)平(ping)(ping)(ping)葉(xie)(xie)片(pian)安全(quan)穩定(ding)運行，減少重(zhong)大的(de)經(jing)濟損失和(he)避免災(zai)難性(xing)事故的(de)發生具有十分重(zhong)要(yao)的(de)意義。

2、目前(qian)(qian)對(dui)透平(ping)葉(xie)(xie)(xie)(xie)片(pian)(pian)的(de)(de)高(gao)(gao)溫(wen)可靠(kao)性(xing)(xing)試(shi)驗研究(jiu)存在多(duo)(duo)(duo)種限制(zhi)。一(yi)方面的(de)(de)，目前(qian)(qian)的(de)(de)試(shi)驗研究(jiu)往(wang)往(wang)采(cai)用(yong)全尺寸(cun)的(de)(de)葉(xie)(xie)(xie)(xie)片(pian)(pian)模(mo)擬(ni)(ni)件(jian)(jian)或簡化(hua)(hua)結構(gou)后的(de)(de)模(mo)擬(ni)(ni)件(jian)(jian)，對(dui)于(yu)全尺寸(cun)的(de)(de)葉(xie)(xie)(xie)(xie)片(pian)(pian)模(mo)擬(ni)(ni)件(jian)(jian)，由于(yu)燃氣(qi)輪(lun)機透平(ping)首級葉(xie)(xie)(xie)(xie)片(pian)(pian)型線復雜(za)(za)，且內(nei)部(bu)(bu)(bu)存在冷(leng)卻通道，結構(gou)較為復雜(za)(za)，模(mo)擬(ni)(ni)件(jian)(jian)設計(ji)與加(jia)工(gong)周(zhou)期較長，同(tong)時，獲得(de)多(duo)(duo)(duo)組(zu)數(shu)(shu)據(ju)(ju)需更換多(duo)(duo)(duo)組(zu)葉(xie)(xie)(xie)(xie)片(pian)(pian)，制(zhi)造成本與時間成本難以(yi)(yi)(yi)承(cheng)受，對(dui)于(yu)簡化(hua)(hua)結構(gou)后的(de)(de)模(mo)擬(ni)(ni)件(jian)(jian)，其往(wang)往(wang)丟(diu)失葉(xie)(xie)(xie)(xie)片(pian)(pian)部(bu)(bu)(bu)分結構(gou)特(te)征，試(shi)驗結果可信度較低；另(ling)一(yi)方面，為了模(mo)擬(ni)(ni)葉(xie)(xie)(xie)(xie)片(pian)(pian)的(de)(de)高(gao)(gao)溫(wen)工(gong)作環(huan)境(jing)，試(shi)驗中往(wang)往(wang)采(cai)用(yong)均熱腔以(yi)(yi)(yi)加(jia)熱葉(xie)(xie)(xie)(xie)片(pian)(pian)，但(dan)此(ci)類方案只(zhi)能使葉(xie)(xie)(xie)(xie)片(pian)(pian)整體加(jia)熱，無(wu)法模(mo)擬(ni)(ni)實際工(gong)況下(xia)葉(xie)(xie)(xie)(xie)片(pian)(pian)尾緣劈縫(feng)區(qu)域內(nei)部(bu)(bu)(bu)冷(leng)氣(qi)與外部(bu)(bu)(bu)高(gao)(gao)溫(wen)燃氣(qi)導致的(de)(de)溫(wen)度梯度，忽略(lve)了溫(wen)度梯度產生的(de)(de)熱應力，試(shi)驗數(shu)(shu)據(ju)(ju)的(de)(de)真(zhen)實有效(xiao)性(xing)(xing)與可靠(kao)性(xing)(xing)難以(yi)(yi)(yi)保(bao)證(zheng)。

技術實現思路

1、本發(fa)明的目的在于(yu)提供了一種(zhong)燃氣輪機透平葉片尾緣(yuan)劈縫(feng)可靠性試(shi)驗(yan)(yan)模擬件(jian)及(ji)方法，以解決傳統透平葉片試(shi)驗(yan)(yan)模擬件(jian)結構特(te)征丟失、設計與制(zhi)造成(cheng)本高、試(shi)驗(yan)(yan)周期長以及(ji)無法模擬真(zhen)實工況下的熱(re)應力等問題。

2、本發明采用如下技(ji)術方案來(lai)實現的：

3、一種(zhong)燃氣輪機透(tou)平葉片尾(wei)(wei)緣(yuan)(yuan)劈(pi)縫(feng)可靠性(xing)試(shi)(shi)(shi)驗(yan)(yan)(yan)模(mo)擬件(jian)，包括依次連接的尾(wei)(wei)緣(yuan)(yuan)劈(pi)縫(feng)可靠性(xing)試(shi)(shi)(shi)驗(yan)(yan)(yan)模(mo)擬件(jian)試(shi)(shi)(shi)驗(yan)(yan)(yan)段、尾(wei)(wei)緣(yuan)(yuan)劈(pi)縫(feng)可靠性(xing)試(shi)(shi)(shi)驗(yan)(yan)(yan)模(mo)擬件(jian)過渡段以及(ji)尾(wei)(wei)緣(yuan)(yuan)劈(pi)縫(feng)可靠性(xing)試(shi)(shi)(shi)驗(yan)(yan)(yan)模(mo)擬件(jian)連接段；

4、尾(wei)(wei)緣劈(pi)縫可靠(kao)性(xing)試(shi)驗模(mo)擬(ni)件(jian)試(shi)驗段包括(kuo)多個(ge)模(mo)擬(ni)子單元，用于模(mo)擬(ni)葉片尾(wei)(wei)緣劈(pi)縫區(qu)域(yu)結構特(te)征，尾(wei)(wei)緣劈(pi)縫可靠(kao)性(xing)試(shi)驗模(mo)擬(ni)件(jian)過渡段用于將尾(wei)(wei)緣劈(pi)縫可靠(kao)性(xing)試(shi)驗模(mo)擬(ni)件(jian)試(shi)驗段與(yu)尾(wei)(wei)緣劈(pi)縫可靠(kao)性(xing)試(shi)驗模(mo)擬(ni)件(jian)連(lian)接(jie)段光滑連(lian)接(jie)，尾(wei)(wei)緣劈(pi)縫可靠(kao)性(xing)試(shi)驗模(mo)擬(ni)件(jian)連(lian)接(jie)段用于與(yu)試(shi)驗臺(tai)連(lian)接(jie)件(jian)進行連(lian)接(jie)。

5、本發(fa)明(ming)進(jin)一(yi)步的(de)改進(jin)在(zai)(zai)(zai)于，在(zai)(zai)(zai)尾緣劈(pi)縫可(ke)靠性試(shi)驗模(mo)(mo)(mo)擬(ni)件(jian)試(shi)驗段，每個模(mo)(mo)(mo)擬(ni)子單元(yuan)均包含(han)透平葉片尾緣劈(pi)縫結構，在(zai)(zai)(zai)不改變尾緣劈(pi)縫可(ke)靠性試(shi)驗模(mo)(mo)(mo)擬(ni)件(jian)承(cheng)載方式的(de)前提下，多個模(mo)(mo)(mo)擬(ni)子單元(yuan)在(zai)(zai)(zai)周向反對稱并在(zai)(zai)(zai)軸向反對稱。

6、本發明進(jin)一步的改進(jin)在于，在尾(wei)緣劈縫(feng)可靠性試驗(yan)(yan)模擬(ni)件試驗(yan)(yan)段(duan)，每個模擬(ni)子單元反對稱結(jie)構(gou)間采用平滑相切的圓弧以進(jin)行過渡連(lian)接。

7、本(ben)發明(ming)進(jin)一步的(de)改進(jin)在于，在尾(wei)緣(yuan)(yuan)(yuan)劈(pi)縫(feng)(feng)可(ke)(ke)靠(kao)性(xing)試(shi)(shi)(shi)驗(yan)(yan)模擬(ni)件試(shi)(shi)(shi)驗(yan)(yan)段(duan)，包括(kuo)葉片緣(yuan)(yuan)(yuan)板、葉根圓角、尾(wei)緣(yuan)(yuan)(yuan)劈(pi)縫(feng)(feng)可(ke)(ke)靠(kao)性(xing)試(shi)(shi)(shi)驗(yan)(yan)模擬(ni)件試(shi)(shi)(shi)驗(yan)(yan)段(duan)尾(wei)緣(yuan)(yuan)(yuan)劈(pi)縫(feng)(feng)以及(ji)尾(wei)緣(yuan)(yuan)(yuan)劈(pi)縫(feng)(feng)可(ke)(ke)靠(kao)性(xing)試(shi)(shi)(shi)驗(yan)(yan)模擬(ni)件試(shi)(shi)(shi)驗(yan)(yan)段(duan)內(nei)部冷卻通道，且滿(man)足尾(wei)緣(yuan)(yuan)(yuan)劈(pi)縫(feng)(feng)可(ke)(ke)靠(kao)性(xing)試(shi)(shi)(shi)驗(yan)(yan)模擬(ni)件與真實(shi)葉片結構(gou)相似原則，結構(gou)相似原則表達式如下：

8、公式1：lt/lb＝a

9、其中(zhong)，l為(wei)(wei)結構關(guan)鍵尺寸，下標t為(wei)(wei)尾緣(yuan)劈縫可靠性試驗模擬件，下標b為(wei)(wei)真實葉片，a為(wei)(wei)模化比。

10、本(ben)發明(ming)進一(yi)步的改進在(zai)于，尾(wei)緣劈(pi)(pi)(pi)縫(feng)可(ke)(ke)靠(kao)(kao)性(xing)(xing)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)模(mo)擬(ni)(ni)(ni)件(jian)(jian)(jian)連(lian)接段(duan)設(she)置有(you)尾(wei)緣劈(pi)(pi)(pi)縫(feng)可(ke)(ke)靠(kao)(kao)性(xing)(xing)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)模(mo)擬(ni)(ni)(ni)件(jian)(jian)(jian)進氣(qi)口(kou)，通過尾(wei)緣劈(pi)(pi)(pi)縫(feng)可(ke)(ke)靠(kao)(kao)性(xing)(xing)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)模(mo)擬(ni)(ni)(ni)件(jian)(jian)(jian)連(lian)接段(duan)冷(leng)卻空氣(qi)通道與尾(wei)緣劈(pi)(pi)(pi)縫(feng)可(ke)(ke)靠(kao)(kao)性(xing)(xing)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)模(mo)擬(ni)(ni)(ni)件(jian)(jian)(jian)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)段(duan)內(nei)部冷(leng)卻通道相連(lian)，試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)時冷(leng)卻空氣(qi)能夠從(cong)尾(wei)緣劈(pi)(pi)(pi)縫(feng)可(ke)(ke)靠(kao)(kao)性(xing)(xing)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)模(mo)擬(ni)(ni)(ni)件(jian)(jian)(jian)進氣(qi)口(kou)經尾(wei)緣劈(pi)(pi)(pi)縫(feng)可(ke)(ke)靠(kao)(kao)性(xing)(xing)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)模(mo)擬(ni)(ni)(ni)件(jian)(jian)(jian)連(lian)接段(duan)冷(leng)卻空氣(qi)通道、尾(wei)緣劈(pi)(pi)(pi)縫(feng)可(ke)(ke)靠(kao)(kao)性(xing)(xing)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)模(mo)擬(ni)(ni)(ni)件(jian)(jian)(jian)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)段(duan)內(nei)部冷(leng)卻通道，從(cong)尾(wei)緣劈(pi)(pi)(pi)縫(feng)可(ke)(ke)靠(kao)(kao)性(xing)(xing)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)模(mo)擬(ni)(ni)(ni)件(jian)(jian)(jian)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)段(duan)尾(wei)緣劈(pi)(pi)(pi)縫(feng)流(liu)出。

11、本發(fa)明進一步的改進在于，該尾緣劈縫(feng)可(ke)(ke)靠性(xing)試(shi)驗(yan)(yan)模擬件加工與(yu)制造(zao)(zao)與(yu)真實燃氣輪機透平葉(xie)片(pian)相同(tong)，且(qie)滿足(zu)尾緣劈縫(feng)可(ke)(ke)靠性(xing)試(shi)驗(yan)(yan)模擬件與(yu)真實葉(xie)片(pian)工藝相似(si)原(yuan)則(ze)，鑄造(zao)(zao)工藝相似(si)原(yuan)則(ze)表達式如(ru)下：

12、公式2：

13、其中，w為(wei)(wei)鑄(zhu)造(zao)重量，s為(wei)(wei)鑄(zhu)造(zao)阻(zu)流截斷面積，f為(wei)(wei)鑄(zhu)造(zao)速度因子，h為(wei)(wei)鑄(zhu)造(zao)靜壓頭。

14、一(yi)種(zhong)燃氣輪機透平(ping)(ping)葉片(pian)尾緣劈縫可(ke)靠性試(shi)驗方(fang)法，該方(fang)法基于所述的(de)一(yi)種(zhong)燃氣輪機透平(ping)(ping)葉片(pian)尾緣劈縫可(ke)靠性試(shi)驗模擬(ni)件(jian)，包括以下步驟：

15、步驟一：對真實(shi)燃(ran)氣輪機透(tou)平葉片進(jin)行(xing)有(you)限(xian)元分析(xi)，獲取葉片真實(shi)工作環境下的葉片溫(wen)度場和應力場，依據(ju)葉片溫(wen)度場和應力場，選定(ding)透(tou)平葉片尾緣劈縫高應力區域作為關鍵區域；

16、步驟二：制定透平高溫(wen)葉(xie)片尾緣(yuan)劈縫可靠性(xing)試驗模擬件；

17、步驟三：對尾(wei)緣劈縫可靠性試(shi)驗(yan)模擬件進(jin)行有限(xian)元數值仿真(zhen)，通(tong)過有限(xian)元數值仿真(zhen)獲(huo)得試(shi)驗(yan)所需的冷卻空氣流(liu)量(liang)值和(he)拉(la)力值，從而滿(man)足尾(wei)緣劈縫可靠性試(shi)驗(yan)模擬件與真(zhen)實葉片載(zai)荷相似(si)原則，載(zai)荷相似(si)原則表(biao)達式如下：

18、公式3：

19、其中(zhong)，為(wei)(wei)溫(wen)度(du)(du)梯度(du)(du)，為(wei)(wei)應(ying)力(li)梯度(du)(du)，(p,q,r)為(wei)(wei)關鍵(jian)位置第一主應(ying)力(li)方向(xiang)，σ為(wei)(wei)關鍵(jian)部(bu)位應(ying)力(li)值，(σx,σy,σz,τxy,τyz,τxz)為(wei)(wei)應(ying)力(li)各分量，為(wei)(wei)保證尾(wei)緣劈縫可靠性試驗(yan)模擬件關鍵(jian)部(bu)位與(yu)真實葉片關鍵(jian)部(bu)位載荷相似，滿足(pt,qt,rt)＝m(pb,qb,rb)，m為(wei)(wei)比例系(xi)數；

20、步驟四：將尾(wei)緣(yuan)(yuan)(yuan)(yuan)劈(pi)縫(feng)可(ke)(ke)(ke)靠(kao)(kao)性(xing)(xing)試(shi)驗(yan)模(mo)(mo)擬(ni)件(jian)安裝至(zhi)高溫(wen)(wen)可(ke)(ke)(ke)靠(kao)(kao)性(xing)(xing)試(shi)驗(yan)臺(tai)；依據(ju)有限(xian)元(yuan)數值(zhi)仿真(zhen)獲(huo)得的(de)冷(leng)卻空氣(qi)(qi)流量值(zhi)q，從(cong)尾(wei)緣(yuan)(yuan)(yuan)(yuan)劈(pi)縫(feng)可(ke)(ke)(ke)靠(kao)(kao)性(xing)(xing)試(shi)驗(yan)模(mo)(mo)擬(ni)件(jian)進氣(qi)(qi)口(kou)中通入(ru)冷(leng)卻空氣(qi)(qi)，同時為解決從(cong)尾(wei)緣(yuan)(yuan)(yuan)(yuan)劈(pi)縫(feng)可(ke)(ke)(ke)靠(kao)(kao)性(xing)(xing)試(shi)驗(yan)模(mo)(mo)擬(ni)件(jian)出(chu)(chu)(chu)氣(qi)(qi)口(kou)流出(chu)(chu)(chu)的(de)冷(leng)氣(qi)(qi)進入(ru)均(jun)熱腔造成(cheng)均(jun)熱腔中溫(wen)(wen)度降低與無法(fa)穩定的(de)問題(ti)，在尾(wei)緣(yuan)(yuan)(yuan)(yuan)劈(pi)縫(feng)可(ke)(ke)(ke)靠(kao)(kao)性(xing)(xing)試(shi)驗(yan)模(mo)(mo)擬(ni)件(jian)出(chu)(chu)(chu)氣(qi)(qi)口(kou)處設置(zhi)有耐高溫(wen)(wen)石(shi)英(ying)管(guan)，接收從(cong)尾(wei)緣(yuan)(yuan)(yuan)(yuan)劈(pi)縫(feng)可(ke)(ke)(ke)靠(kao)(kao)性(xing)(xing)試(shi)驗(yan)模(mo)(mo)擬(ni)件(jian)出(chu)(chu)(chu)氣(qi)(qi)口(kou)處流出(chu)(chu)(chu)的(de)冷(leng)氣(qi)(qi)并引(yin)導至(zhi)均(jun)熱腔外；依據(ju)有限(xian)元(yuan)數值(zhi)仿真(zhen)結果(guo)，對尾(wei)緣(yuan)(yuan)(yuan)(yuan)劈(pi)縫(feng)可(ke)(ke)(ke)靠(kao)(kao)性(xing)(xing)試(shi)驗(yan)模(mo)(mo)擬(ni)件(jian)施加相(xiang)應的(de)拉力載荷f，開(kai)展燃氣(qi)(qi)輪(lun)機(ji)透平葉片尾(wei)緣(yuan)(yuan)(yuan)(yuan)劈(pi)縫(feng)高溫(wen)(wen)模(mo)(mo)擬(ni)件(jian)可(ke)(ke)(ke)靠(kao)(kao)性(xing)(xing)試(shi)驗(yan)；

21、步(bu)驟五：處理試(shi)驗結果(guo)，獲(huo)得燃(ran)氣輪(lun)機(ji)透(tou)平葉片尾緣劈縫關鍵(jian)區域相(xiang)關數據。

22、本發明進一步的改進在于，步驟二的具體實現方(fang)法包括(kuo)：

23、子步驟一：選擇相應的(de)縱向(xiang)截(jie)面和橫向(xiang)截(jie)面，其中，縱向(xiang)截(jie)面垂直于(yu)尾(wei)緣(yuan)(yuan)劈(pi)縫(feng)冷卻空氣射流方向(xiang)，橫向(xiang)截(jie)面平行(xing)于(yu)葉根平臺，保留透平葉片尾(wei)緣(yuan)(yuan)劈(pi)縫(feng)區(qu)域特(te)征，截(jie)取獲得尾(wei)緣(yuan)(yuan)劈(pi)縫(feng)可靠(kao)性試驗模(mo)(mo)擬件(jian)模(mo)(mo)擬子單(dan)元；

24、子(zi)步驟(zou)二：依據試驗臺相(xiang)關情況與加工原件尺寸，選擇相(xiang)應的尾(wei)緣劈縫可靠性(xing)試驗模(mo)(mo)擬件模(mo)(mo)擬子(zi)單(dan)元(yuan)數(shu)量，并依據模(mo)(mo)擬子(zi)單(dan)元(yuan)數(shu)量對(dui)(dui)(dui)(dui)(dui)模(mo)(mo)擬子(zi)單(dan)元(yuan)進行(xing)周向(xiang)(xiang)(xiang)(xiang)反對(dui)(dui)(dui)(dui)(dui)稱(cheng)(cheng)和(he)軸向(xiang)(xiang)(xiang)(xiang)對(dui)(dui)(dui)(dui)(dui)稱(cheng)(cheng)設(she)(she)計(ji)，其中(zhong)，對(dui)(dui)(dui)(dui)(dui)于周向(xiang)(xiang)(xiang)(xiang)反對(dui)(dui)(dui)(dui)(dui)稱(cheng)(cheng)，取(qu)反對(dui)(dui)(dui)(dui)(dui)稱(cheng)(cheng)截面(mian)平行(xing)于上述縱(zong)向(xiang)(xiang)(xiang)(xiang)截面(mian)，同(tong)時(shi)反對(dui)(dui)(dui)(dui)(dui)稱(cheng)(cheng)截面(mian)和(he)縱(zong)向(xiang)(xiang)(xiang)(xiang)截面(mian)的距離滿足(zu)在設(she)(she)定的范圍內，在周向(xiang)(xiang)(xiang)(xiang)反對(dui)(dui)(dui)(dui)(dui)稱(cheng)(cheng)后，采用與兩端相(xiang)切的光(guang)(guang)滑曲(qu)線進行(xing)連接(jie)；對(dui)(dui)(dui)(dui)(dui)于軸向(xiang)(xiang)(xiang)(xiang)對(dui)(dui)(dui)(dui)(dui)稱(cheng)(cheng)，取(qu)對(dui)(dui)(dui)(dui)(dui)稱(cheng)(cheng)截面(mian)平行(xing)與上述橫向(xiang)(xiang)(xiang)(xiang)截面(mian)，同(tong)時(shi)對(dui)(dui)(dui)(dui)(dui)稱(cheng)(cheng)截面(mian)和(he)橫向(xiang)(xiang)(xiang)(xiang)截面(mian)的距離滿足(zu)在設(she)(she)定的范圍內，在軸向(xiang)(xiang)(xiang)(xiang)對(dui)(dui)(dui)(dui)(dui)稱(cheng)(cheng)后，采用光(guang)(guang)滑過渡(du)段連接(jie)軸向(xiang)(xiang)(xiang)(xiang)對(dui)(dui)(dui)(dui)(dui)稱(cheng)(cheng)后的各模(mo)(mo)擬子(zi)單(dan)元(yuan)；

25、子步(bu)驟三：設(she)計尾(wei)緣(yuan)劈(pi)縫可靠(kao)性試(shi)(shi)驗(yan)(yan)(yan)模擬(ni)件(jian)過渡(du)段(duan)連接(jie)(jie)形(xing)式，在尾(wei)緣(yuan)劈(pi)縫可靠(kao)性試(shi)(shi)驗(yan)(yan)(yan)模擬(ni)件(jian)試(shi)(shi)驗(yan)(yan)(yan)段(duan)與尾(wei)緣(yuan)劈(pi)縫可靠(kao)性試(shi)(shi)驗(yan)(yan)(yan)模擬(ni)件(jian)連接(jie)(jie)段(duan)之間設(she)置尾(wei)緣(yuan)劈(pi)縫可靠(kao)性試(shi)(shi)驗(yan)(yan)(yan)模擬(ni)件(jian)過渡(du)段(duan)以進(jin)行平滑連接(jie)(jie)；

26、子(zi)步驟(zou)四(si)：制定尾緣劈縫(feng)可(ke)靠(kao)性試(shi)驗模擬件內部(bu)冷卻空氣通(tong)入形式和通(tong)流通(tong)道；

27、子步驟五：根據實際試(shi)驗條(tiao)件制定連(lian)(lian)接件、尾緣劈縫可(ke)靠性(xing)試(shi)驗模擬件與可(ke)靠性(xing)試(shi)驗臺之間(jian)的(de)連(lian)(lian)接部件；

28、子步(bu)驟六：依據真(zhen)實燃氣輪機透(tou)平高溫(wen)葉片的(de)材(cai)料(liao)和加(jia)工形式，選(xuan)用相同的(de)材(cai)料(liao)與加(jia)工工藝對加(jia)工原(yuan)件(jian)進行加(jia)工，獲得透(tou)平高溫(wen)葉片尾(wei)緣劈縫可靠性試驗(yan)模(mo)擬(ni)件(jian)。

29、本發明進(jin)(jin)一(yi)步的改進(jin)(jin)在于，步驟(zou)三中(zhong)(zhong)對(dui)尾(wei)(wei)緣(yuan)(yuan)劈(pi)縫(feng)可(ke)靠性試(shi)驗(yan)(yan)模(mo)擬(ni)件(jian)(jian)進(jin)(jin)行(xing)(xing)(xing)有限元數值(zhi)(zhi)仿真，包括：首先進(jin)(jin)行(xing)(xing)(xing)流(liu)熱耦(ou)合計(ji)(ji)算(suan)(suan)以(yi)獲得(de)(de)溫(wen)(wen)度(du)(du)場，依(yi)據(ju)(ju)試(shi)驗(yan)(yan)條(tiao)件(jian)(jian)對(dui)尾(wei)(wei)緣(yuan)(yuan)劈(pi)縫(feng)可(ke)靠性試(shi)驗(yan)(yan)模(mo)擬(ni)件(jian)(jian)施(shi)加相(xiang)應(ying)(ying)(ying)的溫(wen)(wen)度(du)(du)邊界條(tiao)件(jian)(jian)以(yi)模(mo)擬(ni)透平葉(xie)(xie)片(pian)實(shi)(shi)際運(yun)行(xing)(xing)(xing)中(zhong)(zhong)的高溫(wen)(wen)工作環境，設置(zhi)冷卻(que)(que)通道中(zhong)(zhong)冷卻(que)(que)空(kong)氣(qi)流(liu)量初始(shi)值(zhi)(zhi)，計(ji)(ji)算(suan)(suan)獲得(de)(de)尾(wei)(wei)緣(yuan)(yuan)劈(pi)縫(feng)可(ke)靠性試(shi)驗(yan)(yan)模(mo)擬(ni)件(jian)(jian)溫(wen)(wen)度(du)(du)場分(fen)布，將模(mo)擬(ni)結(jie)(jie)果與(yu)原(yuan)始(shi)葉(xie)(xie)片(pian)溫(wen)(wen)度(du)(du)場分(fen)布進(jin)(jin)行(xing)(xing)(xing)對(dui)比(bi)，反(fan)復(fu)迭代更新(xin)冷卻(que)(que)通道中(zhong)(zhong)冷卻(que)(que)空(kong)氣(qi)流(liu)量值(zhi)(zhi)，直至尾(wei)(wei)緣(yuan)(yuan)劈(pi)縫(feng)可(ke)靠性試(shi)驗(yan)(yan)模(mo)擬(ni)件(jian)(jian)中(zhong)(zhong)關(guan)鍵位(wei)置(zhi)的溫(wen)(wen)度(du)(du)和溫(wen)(wen)度(du)(du)梯度(du)(du)水(shui)平與(yu)原(yuan)始(shi)葉(xie)(xie)片(pian)溫(wen)(wen)度(du)(du)場相(xiang)近；其次進(jin)(jin)行(xing)(xing)(xing)熱固耦(ou)合計(ji)(ji)算(suan)(suan)以(yi)獲得(de)(de)應(ying)(ying)(ying)力(li)(li)(li)場，對(dui)尾(wei)(wei)緣(yuan)(yuan)劈(pi)縫(feng)可(ke)靠性試(shi)驗(yan)(yan)模(mo)擬(ni)件(jian)(jian)施(shi)加拉(la)力(li)(li)(li)載荷(he)以(yi)模(mo)擬(ni)透平葉(xie)(xie)片(pian)實(shi)(shi)際運(yun)行(xing)(xing)(xing)中(zhong)(zhong)的離(li)心(xin)力(li)(li)(li)載荷(he)，依(yi)據(ju)(ju)試(shi)驗(yan)(yan)條(tiao)件(jian)(jian)對(dui)尾(wei)(wei)緣(yuan)(yuan)劈(pi)縫(feng)可(ke)靠性試(shi)驗(yan)(yan)模(mo)擬(ni)件(jian)(jian)施(shi)加拉(la)力(li)(li)(li)初始(shi)值(zhi)(zhi)，計(ji)(ji)算(suan)(suan)獲得(de)(de)尾(wei)(wei)緣(yuan)(yuan)劈(pi)縫(feng)可(ke)靠性試(shi)驗(yan)(yan)模(mo)擬(ni)件(jian)(jian)應(ying)(ying)(ying)力(li)(li)(li)場分(fen)布，將模(mo)擬(ni)結(jie)(jie)果與(yu)原(yuan)始(shi)葉(xie)(xie)片(pian)應(ying)(ying)(ying)力(li)(li)(li)場分(fen)布進(jin)(jin)行(xing)(xing)(xing)對(dui)比(bi)，反(fan)復(fu)迭代更新(xin)拉(la)力(li)(li)(li)值(zhi)(zhi)，直至尾(wei)(wei)緣(yuan)(yuan)劈(pi)縫(feng)可(ke)靠性試(shi)驗(yan)(yan)模(mo)擬(ni)件(jian)(jian)中(zhong)(zhong)關(guan)鍵位(wei)置(zhi)的應(ying)(ying)(ying)力(li)(li)(li)和應(ying)(ying)(ying)力(li)(li)(li)梯度(du)(du)與(yu)原(yuan)始(shi)葉(xie)(xie)片(pian)溫(wen)(wen)度(du)(du)場相(xiang)近。

30、相較于現有(you)技術，本發明(ming)至少具有(you)如下(xia)有(you)益的技術效果：

31、本發明(ming)提供的(de)(de)(de)(de)一種燃(ran)氣輪機(ji)透(tou)平(ping)(ping)(ping)葉(xie)(xie)(xie)片(pian)(pian)尾(wei)緣(yuan)(yuan)(yuan)(yuan)劈(pi)(pi)(pi)縫(feng)可靠性(xing)試(shi)驗模(mo)擬(ni)件(jian)及(ji)方法(fa)，保留(liu)了真(zhen)(zhen)實(shi)(shi)透(tou)平(ping)(ping)(ping)葉(xie)(xie)(xie)片(pian)(pian)尾(wei)緣(yuan)(yuan)(yuan)(yuan)劈(pi)(pi)(pi)縫(feng)區域(yu)的(de)(de)(de)(de)結(jie)構特征，采用與真(zhen)(zhen)實(shi)(shi)透(tou)平(ping)(ping)(ping)葉(xie)(xie)(xie)片(pian)(pian)相(xiang)同的(de)(de)(de)(de)材(cai)料(liao)與加工(gong)工(gong)藝(yi)，提出的(de)(de)(de)(de)燃(ran)氣輪機(ji)透(tou)平(ping)(ping)(ping)葉(xie)(xie)(xie)片(pian)(pian)尾(wei)緣(yuan)(yuan)(yuan)(yuan)劈(pi)(pi)(pi)縫(feng)高(gao)溫(wen)模(mo)擬(ni)件(jian)拉伸試(shi)驗方法(fa)通過(guo)引入(ru)耐高(gao)溫(wen)石(shi)英管解決了通入(ru)冷(leng)氣后均熱腔內溫(wen)度(du)降低與不穩定的(de)(de)(de)(de)問題，可模(mo)擬(ni)葉(xie)(xie)(xie)片(pian)(pian)真(zhen)(zhen)實(shi)(shi)工(gong)作環境中的(de)(de)(de)(de)溫(wen)度(du)梯度(du)，滿足了尾(wei)緣(yuan)(yuan)(yuan)(yuan)劈(pi)(pi)(pi)縫(feng)高(gao)溫(wen)模(mo)擬(ni)件(jian)與真(zhen)(zhen)實(shi)(shi)透(tou)平(ping)(ping)(ping)葉(xie)(xie)(xie)片(pian)(pian)結(jie)構相(xiang)似(si)原(yuan)則(ze)、工(gong)藝(yi)相(xiang)似(si)原(yuan)則(ze)和(he)載荷相(xiang)似(si)原(yuan)則(ze)，每個(ge)尾(wei)緣(yuan)(yuan)(yuan)(yuan)劈(pi)(pi)(pi)縫(feng)高(gao)溫(wen)模(mo)擬(ni)件(jian)包(bao)含多(duo)個(ge)模(mo)擬(ni)子單(dan)元(yuan)，一次試(shi)驗可獲(huo)得(de)多(duo)組(zu)數(shu)據，尾(wei)緣(yuan)(yuan)(yuan)(yuan)劈(pi)(pi)(pi)縫(feng)高(gao)溫(wen)模(mo)擬(ni)件(jian)設(she)(she)計簡單(dan)，加工(gong)制造(zao)難度(du)低，試(shi)驗周期(qi)短，可獲(huo)得(de)透(tou)平(ping)(ping)(ping)葉(xie)(xie)(xie)片(pian)(pian)尾(wei)緣(yuan)(yuan)(yuan)(yuan)劈(pi)(pi)(pi)縫(feng)區域(yu)最真(zhen)(zhen)實(shi)(shi)有(you)效(xiao)數(shu)據，為(wei)透(tou)平(ping)(ping)(ping)葉(xie)(xie)(xie)片(pian)(pian)尾(wei)緣(yuan)(yuan)(yuan)(yuan)劈(pi)(pi)(pi)縫(feng)區域(yu)結(jie)構的(de)(de)(de)(de)設(she)(she)計及(ji)優化提供參(can)考依據。