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在工程设计中,结构的变形和应力分析是刚度和强度计算的基本内容,一直为设计人员所重视。对那些高温高速下的旋转机械,考察其内部的温度分布状态,分析各种机械负荷,热负荷条件下相应的机械应力及热应力,以判断材料疲劳强度和产生裂纹的可能性等,显得更为重要。本文通过等参数有限元素法分析,形成一般平面或轴对称体的非稳定温度场,应力场的计算格式。为使微型计算机在科学计算中发挥更大作用,以微机算大题,我们把该有限元算法编制成FORTRAN—77程序,运行于M68000微
In engineering design, structural deformation and stress analysis is the basic content of stiffness and strength calculation, which has been taken seriously by designers. For those rotating machinery under high temperature and high speed, the internal temperature distribution is investigated, and the corresponding mechanical and thermal stresses under various mechanical loads and heat loads are analyzed to determine the fatigue strength and the possibility of cracks. Important. In this paper, the finite element method of isoparametric analysis is used to form the calculation formula of the unsteady temperature field and stress field of the general plane or axisymmetric body. In order to make the microcomputer play a greater role in scientific computing, the big problem with the computer, we compiled the finite element algorithm FORTRAN-77 program, running on the M68000 micro