基于PM模型研究双层板中损伤引起的非经典非线性效应
Research on non-classical nonlinearity effects caused by damage in double-layer plate based on PM model
摘 要
从仿真角度研究了复合层状板中微损伤与Lamb波相互作用产生的非经典非线性效应。仿真采用Preisach-Mayergoyz(PM)模型描述损伤材料的动力学特征,该模型由大量迟滞单元组成。仿真中,在不同激发条件下双层板中产生了不同的Lamb波模态,结合Lamb波的频散特性,识别其为S0和A0模态,仿真结果表明,两种模态对损伤的检测效果也有差距。仿真还进一步研究了PM模型的尺寸与分布密度对S0模态Lamb非线性的影响,结果表明可以利用Lamb波检测到的非线性效应描述损伤的生长情况和严重程度。
非线性
Lamb波
Preisach-Mayergoyz模型
combined material
nonlinearity
Lamb wave
Preisach-Mayergoyz model
Abstract
Studies have been made of the non-classical nonlinear effects caused by the interaction of micro-damage and Lamb waves in the composite layered plate from the perspective of simulation. The Preisach-Mayergoyz (PM) model is used to describe the dynamic characteristics of the damaged material, which is composed of a large number of hysteresis elements. In the simulation, different Lamb wave modes are generated in the double-layer plate model under different excitation conditions. Combined with the dispersion characteristics of the Lamb wave, these modesare identified as S0 and A0 modes, respectively. The simulation results show that the damage detection effects of the two modes are also different. The simulation also further studied the influence of the size and distribution density of the PM model on the Lamb nonlinearity of the S0 mode. The results show that the nonlinearity detected by Lamb waves can be used to describe the growth and severity of damage.
中图分类号 TG115.28 DOI 10.11973/wsjc202206005
所属栏目 2021远东无损检测新技术论坛论文精选
基金项目 国家重点研发计划(2020YFA0211400);国家自然科学重点项目(11834008);国家自然科学基金(12174192);声场与声信息国家重点实验室项目(SKLA202008);中国科学院水下声环境重点实验室项目(SSHJ-KFKT-1701)
收稿日期 2021/12/15
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备注范淼淼(1999-),男,硕士研究生,主要研究方向为物理声学
引用该论文: FAN Miaomiao,LIN Yiran,HE Aijun,LIU Xiaozhou. Research on non-classical nonlinearity effects caused by damage in double-layer plate based on PM model[J]. Nondestructive Testing, 2022, 44(6): 21～25
范淼淼,林懿然,何爱军,刘晓宙. 基于PM模型研究双层板中损伤引起的非经典非线性效应[J]. 无损检测, 2022, 44(6): 21～25
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