科研之友
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摘要
The paper presents the results of design, by the SADSF method, of tensioned strips with holes in the central part, and the results of linear FEM analyses. Estimation of fatigue life by, local strain method is also presented. The essential aim of the work is to confirm the usefulness of the SADSF method which assumes the condition of equalized effort in limit state, to designing elements working in elastic rage, and subjected to loads variable in time. The SADSF method is one of few methods which make it possible to effectively solve the design problems, also in the cases of very complex structures. Then, it can be competitive to very advanced methods of the so-called topology optimization. The SADSF method, unlike the latter ones, does not require, applying laborious optimization procedures, and can be easily used in engineering design. Moreover, it can be applied already at the moment when only boundary conditions are known. Using the SADSF method, we have constructed a whole series of solutions of strips having a hole in the central part, which satisfy the assumed boundary condition. The carried-out analyses have confirmed good qualifies of the designed elements, and the obtained solutions have shown how to select such design methods, which give low stress concentration and high fatigue life.
- 出版日期2010
