蓄热式烧嘴热应力场数值模拟与破损机理分析

摘要

With the numerical simulation of the thermal stress field of double regenerative burner,the breakage mechanism of double regenerative burner has been analyzed.The results show that the fatigue damage is the cause of the double regenerative burner crack,and the crack position is located in the biggest stress amplitude place.The result of numerical simulation was shown to well correspond to the practical situation,that shows the calculation model and the calculation results can correctly reflect the burner failure of the actual situation,and the results are effective and credible.%通过对蓄热式烧嘴的温度场和热应力场的数值模拟,对蓄热式烧嘴破损机理进行分析.结果表明,疲劳破坏是烧嘴裂纹产生的原因,且裂纹位置位于最大应力幅处.数值模拟结果与实际情况相吻合,说明计算模型和计算结果能够正确反映烧嘴破坏的实际情况,其结果有效可信.