基于逆向工程的三维模型重构
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摘要
通过手持式三维激光扫描仪获取安全帽表面的点云数据,用逆向工程软件Imageware对点云数据进行处理与曲面重构;利用Creo构造冲击实验模型,再用Ansys Workbench进行冲击实验,随后进行优化分析。结果表明:安全帽应力和变形主要集中在顶部,并向底部逐渐降低;最大应力及变形均位于冲击处,最大应力为0.528 MPa,最大变形为9.852 mm。优化后的模型,其最大应力降低了33.52%,最大应变降低了13.88%。
The helmet surface was digitally measured with the hand-held 3D laser scanner to obtain the point-cloud data. Imageware and Creo were used to deal with the point cloud data, reconstruct the surface model and construct impact test model. And then, the impact test, analysis and optimization were carried out based on Ansys Workbench. The results show that the stress and deformation of the helmet are mainly concentrated at the top and then gradually reduced, the maximum stress and deformation are located at the impact point, the maximum stress is 0.528 MPa and the maximum deformation is 9.852 mm. But the above parameters of optimized models are 33.53% and 13.88% lower than before.
The helmet surface was digitally measured with the hand-held 3D laser scanner to obtain the point-cloud data. Imageware and Creo were used to deal with the point cloud data, reconstruct the surface model and construct impact test model. And then, the impact test, analysis and optimization were carried out based on Ansys Workbench. The results show that the stress and deformation of the helmet are mainly concentrated at the top and then gradually reduced, the maximum stress and deformation are located at the impact point, the maximum stress is 0.528 MPa and the maximum deformation is 9.852 mm. But the above parameters of optimized models are 33.53% and 13.88% lower than before.
引文
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[6]王婷,苏红磊.基于逆向工程的CAD模型重构[J].现代制造工程,2015(2):89-92.
[7]刘炀,陈曦,石鸽娅,等.逆向工程技术在曲面重构及检测中的应用[J].组合机床与自动化加工技术,2012(1):51-53.
[8]Aitor Arriaga,Rikardo Pagaldai,Ane Miren Zaldua,et al.Impact testing and simulation of a polypropylene component:Correlation with strain rate sensitive constitutive models in ANSYS and LS-DYNA[J].Polymer Testing,2010,29(2):170-180
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[10]Alvaro Goyanes,Asma B M Buanz,Grace B Hatton,et al.3D printing of modified-release aminosalicylate(4-ASA and 5-ASA)tablets[J].European Journal of Pharmaceutics and Biopharmaceutics,2015,89:157-162.
[11]唐通鸣,张宇,魏金栋,等.手持式监视器外壳塑件的结构优化设计[J].塑料科技,2015,43(11):65-68.
[2]田晓东,史桂蓉,阮雪榆.复杂曲面实物的逆向工程及其关键技术[J].机械设计与制造工程,2000,29(4):1-3.
[3]Tamas Varady,Ralph R Martin,Jordan Cox.Reverse engineering of geometric models:An introduction[J].CAD,1997,29(4):255-268
[4]Bian Keke,Ke Yinglin.Topology recovery technique for complex freeform surface model after local geometry repair[J].Chin J Mechanic Eng,2013,26(1):197-206.
[5]邓佳文,张政,厉丹彤,等.基于逆向工程与快速原型的三维模型重构[J].塑料工业,2015,43(5):35-38.
[6]王婷,苏红磊.基于逆向工程的CAD模型重构[J].现代制造工程,2015(2):89-92.
[7]刘炀,陈曦,石鸽娅,等.逆向工程技术在曲面重构及检测中的应用[J].组合机床与自动化加工技术,2012(1):51-53.
[8]Aitor Arriaga,Rikardo Pagaldai,Ane Miren Zaldua,et al.Impact testing and simulation of a polypropylene component:Correlation with strain rate sensitive constitutive models in ANSYS and LS-DYNA[J].Polymer Testing,2010,29(2):170-180
[9]丁玉平.基于ANSYS/LS-DYNA的某缓冲包装缓冲特性分析与优化[D].无锡:江南大学,2014.
[10]Alvaro Goyanes,Asma B M Buanz,Grace B Hatton,et al.3D printing of modified-release aminosalicylate(4-ASA and 5-ASA)tablets[J].European Journal of Pharmaceutics and Biopharmaceutics,2015,89:157-162.
[11]唐通鸣,张宇,魏金栋,等.手持式监视器外壳塑件的结构优化设计[J].塑料科技,2015,43(11):65-68.