Based upon the elasticity theory, a mechanical model for the casing pipe was built and the relationship between residual stress and compression strength was developed by FEM.

运用弹性力学理论，建立石油套管的力学模型，通过有限元计算，得到残余应力与石油套管抗压溃强度之间的关系。

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Based on the analysis of crack and residual stress, mechanical property of Laser Rapid Forming sample is studied.

在裂纹和残余应力分析的基础上，研究激光快速成形件的力学性能。

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However, for the metal mechanical parts which are processed by mechanical method, the influence of its inner residual stress on the thermal deformation error should be considered.

然而，对于由机械加工获得的金属机械零件，必须考虑零件内存在的残余应力对热变形误差的影响。

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