以由两种不同弹性模量金属组成的双金属复合管为研究对象,对其承受内压力的情况进行了力学分析,研究了应力分布、屈服的临界条件、弹性能的分布与内外层金属的弹性模量之间的关系。结果表明,在承受内压力时,复合管周向的应力不连续,实际使用中,双金属界面位置经常出现附加的拉应力,可能导致其开裂。 The bimetallic composite tube composed of two different elastic modulus metals is taken as the research object. The mechanical analysis of the bimetallic composite tube subjected to the internal pressure is conducted. The stress distribution, critical conditions of yielding, Relationship between elastic modulus. The results show that when the internal pressure is applied, the stress in the circumferential direction of the composite pipe is discontinuous. In practice, additional tensile stress often occurs at the bimetallic interface, which may lead to cracking.