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A novel parametric model of the stiifened shell is developed by Python language with Abaqus in this paper. As an effective analysis method in the optimal design, explicit finite element method (FEM) is used to design and optimize the skin thickness and stiffener size of Stiffened Shells. The optimization objectives and constraints are mainly the minimum mass subject to the structural performance and...
Epoxy based polymers are widely used in the semiconductorindustry as thermal or/and electrical interfaces and as encapsulating material. In the automotive industry epoxy molding compounds are often used to protect not only singleIC packages but also the entire electronic control units (ECUs) or power modules. Fracture processes in mold materials used for the encapsulation of electro mechanical components...
A finite element model of compact tear specimen (CTS) is built for the study of three-dimensional I-II mixed mode fracture. Since the three dimensional effects of load combination and the thickness are concerned, the model of the specimen is built in 5 thickness, and the numerical analysis is taken at seven different angles which is span from 00 to 900 with a step of 150. The paper focuses on computer-based...
This paper presents an efficient non-linear finite element (NLFEA) model using the commercial FE package ABAQUS to predict the ultimate load behaviour of deck slabs in concrete bridge deck slabs. In order to overcome the instability problems, stabilization methods were adopted and failure criteria were established to capture the ultimate loads. The proposed NLFEA predictions showed a good correlation...
Numerical calculations concerning the dynamic behavior of a railgun are presented. At the first stage, the structural problem can be decoupled from electromagnetic phenomena as well as from the local projectile behavior. The magnetic pressure repelling the rails from each other and expanding with the speed of the projectile serves as a boundary condition for purely mechanical calculations. The particularity...
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