A CAD/CAE incorporate software framework using a unified representation architecture

Xia, Zhaohui; Wang, Qifu; Wang, Yingjun; Chen, Yu

doi:10.1016/j.advengsoft.2015.05.005

Cited by 26 publications

(9 citation statements)

References 41 publications

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“…An ITO-MMC subjected to a symmetric constraint with an automatic reconstruction of boundary condition [62,63] is under construction. In addition, the computational efficiency of the proposed optimization framework can be largely improved by a GPU algorithm [64], and it needs further research.…”

Section: Discussionmentioning

confidence: 99%

Isogeometric topology optimization based on energy penalization for symmetric structure

Xie

Wang

et al. 2020

Front. Mech. Eng.

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We present an energy penalization method for isogeometric topology optimization using moving morphable components (ITO-MMC), propose an ITO-MMC with an additional bilateral or periodic symmetric constraint for symmetric structures, and then extend the proposed energy penalization method to an ITO-MMC with a symmetric constraint. The energy penalization method can solve the problems of numerical instability and convergence for the ITO-MMC and the ITO-MMC subjected to the structural symmetric constraint with asymmetric loads. Topology optimization problems of asymmetric, bilateral symmetric, and periodic symmetric structures are discussed to validate the effectiveness of the proposed energy penalization approach. Compared with the conventional ITO-MMC, the energy penalization method for the ITO-MMC can improve the convergence rate from 18.6% to 44.5% for the optimization of the asymmetric structure. For the ITO-MMC under a bilateral symmetric constraint, the proposed method can reduce the objective value by 5.6% and obtain a final optimized topology that has a clear boundary with decreased iterations. For the ITO-MMC under a periodic symmetric constraint, the proposed energy penalization method can dramatically reduce the number of iterations and obtain a speedup of more than 2.

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Section: Discussionmentioning

confidence: 99%

Isogeometric topology optimization based on energy penalization for symmetric structure

Xie

Wang

et al. 2020

Front. Mech. Eng.

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“…Hexahedral solid mesh models based on NURBS are generated to analyze the patient-specific blood flow geometry. NURBS application also causes the link between the CAD and the polyhedral model [23]. However, the choice regarding the weight of NURBS is of great challenge when the approximated shape is complicated, especially in the complex and deformed structure.…”

Section: Geometric Model Generation Technologiesmentioning

confidence: 99%

Finite Element Analysis based on A Parametric Model by Approximating Point Clouds

Neumann

2020

Remote Sensing

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Simplified models are widely applied in finite element computations regarding mechanical and structural problems. However, the simplified model sometimes causes many deviations in the finite element analysis (FEA) of structures, especially in the non-designed structures which have undergone unknowable deformation features. Hence, a novel FEA methodology based on the parametric model by approximating three-dimensional (3D) feature data is proposed to solve this problem in the present manuscript. Many significant and effective technologies have been developed to detect 3D feature information accurately, e.g., terrestrial laser scanning (TLS), digital photogrammetry, and radar technology. In this manuscript, the parametric FEA model combines 3D point clouds from TLS and the parametric surface approximation method to generate 3D surfaces and models accurately. TLS is a popular measurement method for reliable 3D point clouds acquisition and monitoring deformations of structures with high accuracy and precision. The B-spline method is applied to approximate the measured point clouds data automatically and generate a parametric description of the structure accurately. The final target is to reduce the effects of the model description and deviations of the FEA. Both static and dynamic computations regarding a composite structure are carried out by comparing the parametric and general simplified models. The comparison of the deformation and equivalent stress of future behaviors are reflected by different models. Results indicate that the parametric model based on the TLS data is superior in the finite element computation. Therefore, it is of great significance to apply the parametric model in the FEA to compute and predict the future behavior of the structures with unknowable deformations in engineering accurately.

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“…Their system supports data exchange and transmission in multi-domain analyses, enabling integration and information exchange of various software to a certain extent. Xia et al [29] proposed a unified representation architecture that resolves the incompatibility between a CAD system and the data structure of a CAE system model. By combining CAD and CAE into an organic entity, they greatly reduced the redundancy in the grid-generated data.…”

Section: Introductionmentioning

confidence: 99%

An Integrated Cloud CAE Simulation System for Industrial Service Applications

et al. 2019

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The cloud-based computer-aided engineering (CAE) technology expands the application scope of CAE, solves the problem of uneven distribution, and improves the efficiency of the simulation resources. Consequently, various industries are turning to cloud CAE technology to design their products. However, to utilize this technology fully, we must overcome problems, such as impracticality, inability to handle complex analysis objects, poor data transmission, and compatibility, and poor industrial applicability. Based on the ASP.NET, VB.NET, and ANSYS Parametric Design Language, this paper establishes an integrated cloud CAE simulation system for industrial service applications. The system: 1) connects the dispatching manager through the network and 2) clusters the servers according to their load and usage before dispatch, thereby enabling users to access the ANSYS software remotely. The model can be built either by inputting the dimensions of the parametric model through the page or by uploading a three-dimensional computeraided design (CAD) model that meets the format requirements. The material parameters and the boundary conditions also input through the page. Thus, clients can input their own parameters and analyze the server CAD. Finally, the CAE analysis results can be invoked by a page operation, saving meaningful results on the server to be accessed directly by users. The proposed simulation system serves the needs of users both quickly and efficiently. In the large-scale industrial application trials, enterprises responded favorably to the system. In particular, it properly solves the CAE analysis problems of small-and medium-sized machinery and equipment enterprises. INDEX TERMS Integrated design, APDL, CAE, digital design, load balancing, service platform.

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A CAD/CAE incorporate software framework using a unified representation architecture

Cited by 26 publications

References 41 publications

Isogeometric topology optimization based on energy penalization for symmetric structure

Isogeometric topology optimization based on energy penalization for symmetric structure

Finite Element Analysis based on A Parametric Model by Approximating Point Clouds

An Integrated Cloud CAE Simulation System for Industrial Service Applications

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