中文摘要：

在不同工况下对波纹管进行应力应变分析是评估其对各种工况承受能力的基础和重要组成部分,非线性限元计算能够有效地解决传统的解析法无法计算的波纹管弹塑性大变形范围内的载荷—应力响应问题。对波纹管进行结构优化设计,利用ANSYS有限元软件分析优化设计前后波纹管达到轴向极限位移时的应力和位移,结果表明,在相同条件下,优化前后的波纹管达到轴向极限位移时的应力均未超过抗拉强度,而优化后波纹管的轴向极限位移比优化前的大3mm左右,说明优化设计后的波纹管具有更好的位移补偿能力,从而能够节约成本。

英文摘要：

Stress and strain analysis of corrugated tube in different conditions is the foundation and an important part of assessing its tolerance for a variety of conditions.The non-linear finite element calculation can effectively solve the load-stress response questions in the range of elastic-plastic large deformation which can not be calculated by the traditional analytical method.The corrugated tube structure was optimized and the ANSYS software was used to analyze the stress and displacement of ultimate axial displacement.Under the same geometric parameters,the results showed that with and without inside pressure,both the stress of ultimate axial displacement is no more than tensile strength,while the ultimate axial displacement of optimized tube is about 3mm more than the un-optimized one.Thus the optimized corrugated tube has better displacement compensation capacity,which can reduce the cost.