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初始扭转梁在工程结构中的使用越来越广泛。对初始扭转梁力学性能进行系统的分析研究,提出可靠的力学分析模型和计算理论具有非常重要的实际意义。基于小变形线弹性基本假定,对初始扭转矩形梁进行力学性能分析,得出初始扭转矩形梁的位移解,举例并利用ANSYS进行验证分析。验证结果表明:初始扭转矩形梁小变形问题的求解方法是可行的;且由于初始扭转角的存在,初始扭转悬臂梁的位移较无初始扭转直梁增大,并且出现侧向位移,截面“等效抗弯刚度”变小。同时,小变形位移解为初始扭转梁有限元数值分析提供了精确的位移插值函数模式。
The initial torsion beam is used more and more widely in engineering structures. Systematic analysis and research on the mechanical properties of the initial torsion beam and the establishment of reliable mechanical analysis model and calculation theory are of great practical significance. Based on the basic assumption of elastic deformation of small deformation line, the mechanical behavior of the initial torsion rectangular beam is analyzed, and the displacement solution of the initial torsion rectangular beam is obtained. An example is given and verified by ANSYS. The results of the verification show that the method of solving the small deformation problem of the initial torsion rectangular beam is feasible. Because of the initial torsion angle, the displacement of the initial torsion cantilever beam increases more than that of the initial torsion beam and the lateral displacement appears. Equivalent bending stiffness "smaller. At the same time, the small deformation displacement solution provides the accurate displacement interpolation function model for the initial torsional beam finite element numerical analysis.