德国亚琛工业大学Rüdiger Schmidt教授学术报告

德国亚琛工业大学Rüdiger Schmidt教授学术报告

报告简介:智能结构是将压电、磁致伸缩等功能材料集成在普通复合材料层合结构中的一类新型结构材料。由于这种结构的诸多优越性能,越来越多的航空航天及汽车领域用于形状控制、噪声控制、振动控制、健康监测等。为了解决智能结构建模与计算难题,结合Schmidt教授在德国亚琛工业大学的研究成果,该报告介绍智能结构在应变场、电场、磁场、温度场等多场耦合下的建模与计算方法,并同时考虑几何非线性、材料非线性等的影响。

报告一

报告主题:Thin-walled Smart Structures – Modelling and Simulation

报告时间:20191130日(周六) 上午9:00

报告地点:哈工大科学园A 复合材料与结构研究所 313会议室

报告摘要:

This presentation addresses modeling aspects and finite element simulation of the nonlinear static and transient vibration response of thin-walled smart structures and its application to shape and vibration control. Results of comparative finite element simulations based on different nonlinear plate and shell theories are presented and compared to results published by other authors. Another important research goal in this context is the improvement of the linear or nonlinear structural theories on which these finite elements are based, especially from the point of view of the adopted kinematical hypothesis. In this presentation, results of linear and nonlinear static and dynamic simulations are shown which are based on First- and Third-Order transverse shear deformation plate and shell theory.

 

报告二

报告主题:Smart Structures Coupled Multi-physics Modelling and Simulation

报告时间:20191204 下午2:00

报告地点:哈工大科学园A 复合材料与结构研究所 314会议室

报告摘要:

In this report, a thermodynamically consistent continuum mechanics based framework is used which includes the conservation of mass, linear and angular momentum, electric and magnetic potentials, and the conservation of energy. The second principle of thermodynamics is used to derive the restrictions for the constitutive equations using the Coleman-Noll analysis. This approach leads to thermodynamically consistent thermo-electro-magneto-elastic coupled field equations. The resulting field equations account for the structural, electrical, magnetical and thermal nonlinear effects, for the thermo-electro-magneto-mechanical coupling effects, as well as for the instationary effects. A finite element concept based on weak formulations of the conditions of equilibrium, conservation of electric and magnetic potentials and conservation of energy is developed. Transition from 3-D continuum mechanics to 2-D theories of plates and shells is performed in the framework of the Reissner-Mindlin first-order shear deformation hypothesis. Various examples are presented in which the coupling effects between various combinations of the mechanical, electrical, magnetical and thermal variables can be observed.

 

报告人简介:Rüdiger Schmidt博士是德国亚琛工业大学机械学院教授,曾任一般力学研究所副所长,结构力学实验室主任。主要研究领域包括结构力学、计算力学、薄壁结构动力学、复合材料结构、形状和振动控制智能结构、压电及磁致伸缩智能材料、冲击及损伤力学等,在实验研究、数值仿真以及理论预报等方面有很深的造诣。主持和合作科研项目20余项,在相关研究领域发表学术论文200余篇。曾获亚琛工业大学Springorum奖章、波兰科学院奖金、马克斯普朗克协会Minerva德国-以色列研究奖金、北约合作研究基金、欧盟Tempus基金等奖励。

 

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