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Analysis and Damage Identification of a Moderately Thick Cracked Beam Using an Interdependent Locking-Free Element
Journal of Optimization Theory and Applications ( IF 1.9 ) Pub Date : 2020-03-26 , DOI: 10.1007/s10957-020-01637-6
Marco Pingaro , Giacomo Maurelli , Paolo Venini

The Timoshenko interdependent interpolation element, based on the assumption of cubic interpolation for the transverse displacement and quadratic interpolation for the rotation, is developed for both the static and the dynamic problems. Next, the different behavior of a beam due to the presence of a damaged zone is investigated and the problem of identifying diffused crack affecting a portion of the beam using natural frequencies is studied. The damaged zone can be completely taken into account by introducing only three parameters, and for the inverse problem, numerical optimization is applied to define their values.

中文翻译:

使用相互依赖的无锁定单元对中厚裂纹梁进行分析和损伤识别

Timoshenko 相互依存插值元素基于横向位移三次插值和旋转二次插值的假设,是为静态和动态问题开发的。接下来,研究了由于损坏区域的存在而导致的梁的不同行为,并研究了使用固有频率识别影响梁一部分的扩散裂纹的问题。只引入三个参数就可以完全考虑损坏区域,对于逆问题,应用数值优化来定义它们的值。
更新日期:2020-03-26
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