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首页> 外文会议>Recent advances in contact mechanics >Chapter 18 On the Separation Zones in Aluminium Base-Plate Connections. Numerical Simulation and Laboratory Testing
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Chapter 18 On the Separation Zones in Aluminium Base-Plate Connections. Numerical Simulation and Laboratory Testing

机译：第18章关于铝基板连接的分隔区。数值模拟和实验室测试

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摘要

The present paper deals with the study of the separation problem under combined loading conditions of aluminium base-plate connections. The classical unilateral contact law of Signorini is applied in order to describe the contact conditions between the contact surfaces and the separation process along the connection. Thus the problem is formulated as a variational inequality that expresses the principle of virtual work of the connection at the state of equilibrium, where the unilateral contact is included in the formulation. The application of an appropriate finite element discretization scheme leads to the formation of a quadratic optimization programming problem which is coupled by inequality constraints with respect to the displacements. The latter problem expresses from the standpoint of mechanics, the principle of minimum potential energy of the connection at the state of equilibrium. The aforementioned problem can be numerically and effectively treated by the application of two easy-to-use solution strategies based on quadratic optimization algorithms. This technique is illustrated by means of a numerical application. Due to the great significance of the problem, laboratory testing has been carried to extensively investigate the phenomenon. The numerical results are compared with respective laboratory testing results.
机译：本文研究铝基板连接在组合载荷条件下的分离问题。应用Signorini的经典单边接触定律是为了描述接触面之间的接触条件以及沿着连接的分离过程。因此，该问题被表述为变分不等式，该变分不等式表达了在平衡状态下连接的虚拟功的原理，其中在配方中包括了单边接触。适当的有限元离散化方案的应用导致形成二次优化规划问题，该问题由关于位移的不等式约束耦合。从力学的观点来看，后一个问题表示在平衡状态下连接的最小势能原理。通过应用基于二次优化算法的两种易于使用的求解策略，可以从数字上有效地解决上述问题。借助于数值应用说明了该技术。由于问题的重大意义，已经进行了实验室测试以广泛研究该现象。将数值结果与相应的实验室测试结果进行比较。

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