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topology的案例

HyperMesh— Topology Revision Options該如何靈活設(shè)置? ¥10
出現(xiàn)這樣現(xiàn)象的原因是因?yàn)?em>Topology Revision Options下的設(shè)置是默認(rèn)Remesh選項(xiàng),因此靈活設(shè)置Topology Revision Options選項(xiàng)對(duì)后續(xù)的網(wǎng)格劃分十分重要。
基于Ansys Topology Optimization的連桿結(jié)構(gòu)拓?fù)鋬?yōu)化簡(jiǎn)例
基于Ansys Topology Optimization的連桿結(jié)構(gòu)拓?fù)鋬?yōu)化簡(jiǎn)例 本文僅作為Ansys Topology Optimization的一個(gè)簡(jiǎn)易案例應(yīng)用,切勿輕易用于工程實(shí)踐與論文撰寫。 歡迎大家轉(zhuǎn)載、點(diǎn)贊、留言,這是我寫文章的動(dòng)力。 本文為作者原創(chuàng)案例,轉(zhuǎn)載請(qǐng)注明出處和作者技術(shù)鄰筆名:CAE夢(mèng)想很偉大 業(yè)務(wù)咨詢鏈接:http://www.yqgqt.org.cn/b/280 拓?fù)鋬?yōu)化(topology optimization),是指一種根據(jù)給定的負(fù)載情況、約束條件和性能指標(biāo),在給定的區(qū)域內(nèi)對(duì)材料分布進(jìn)行優(yōu)化的數(shù)學(xué)方法。 拓?fù)鋬?yōu)化的研究領(lǐng)域主要分為連續(xù)體拓?fù)鋬?yōu)化和離散結(jié)構(gòu)拓?fù)鋬?yōu)化。不論哪個(gè)領(lǐng)域,都要依賴于有限元方法。連續(xù)體拓?fù)鋬?yōu)化是把優(yōu)化空間的材料離散成有限個(gè)單元(殼單元或者體單元),離散結(jié)構(gòu)拓?fù)鋬?yōu)化是在設(shè)計(jì)空間內(nèi)建立一個(gè)由有限個(gè)梁?jiǎn)卧M成的基結(jié)構(gòu),然后根據(jù)算法確定設(shè)計(jì)空間內(nèi)單元的去留,保留下來(lái)的單元即構(gòu)成最終的拓?fù)浞桨福瑥亩鴮?shí)現(xiàn)拓?fù)鋬?yōu)化。 目前,連續(xù)體拓?fù)鋬?yōu)化的研究已經(jīng)較為成熟,其中變密度法已經(jīng)被應(yīng)用到商用優(yōu)化軟件中,其中最著名的是美國(guó)Altair公司Hyperworks系列軟件中的Optistruct和德國(guó)Fe-design公司的Tosca等。前者能夠采用Hypermesh作為前處理器,在各大行業(yè)內(nèi)都得到較多的應(yīng)用;后者最開始只集中于優(yōu)化設(shè)計(jì),支持所有主流求解器,以及前后處理,操作十分簡(jiǎn)單可以利用已熟悉的CAE軟件來(lái)進(jìn)行前處理加載,而后利用TOSCA進(jìn)行優(yōu)化十分方便。近年來(lái)和Ansa聯(lián)盟,開發(fā)了基于Ansa的前處理器,并開發(fā)了TOSCA GUI界面,以及ansys workbench當(dāng)中ACT的插件,可以直接在workbench當(dāng)中進(jìn)行拓?fù)鋬?yōu)化仿真。
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Aircraft Rib Intercostal Topology Optimi
Aircraft Rib Intercostal Topology Optimisation In order to demonstrate the application of GENESIS to aerospace structures, a topology optimisation study was performed to determine the optimum rib layout for a wing rib intercostal. The objective of the study was to determine the optimum rib layout for a shear panel intercostal configuration to support a flaptrack system.
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Ansys_Mesher failed to mesh topological edges解決方法
首先什么是topological edges?help里也沒有明確的說(shuō)明,我覺得是在一些結(jié)構(gòu)不連續(xù)的面之間,形成的交接邊。 報(bào)錯(cuò)因?yàn)椋@里沒辦法畫網(wǎng)格。 Virtual Topology 是最常用來(lái)解決面丟失,幾何不規(guī)則的情況。這里很難將這個(gè)不連續(xù)的面進(jìn)行虛擬拓?fù)洹V苯訉⒕€虛擬拓?fù)湟部赡軙?huì)報(bào)錯(cuò)。 解決步驟應(yīng)該如下: 查看error message 定位到問題邊 將問題邊一側(cè),可以虛擬拓?fù)涞拿妫嗤負(fù)鋷讉€(gè)。 拓?fù)溥^的面有多個(gè)邊,問題邊也在其中。將這些邊選中,進(jìn)行拓?fù)?Mesh,Done.
topology圖1
ANSYS Topology Optimization拓?fù)鋬?yōu)化技術(shù)在輕量化設(shè)計(jì)應(yīng)用概述
圖1 ANSYS Topology Optimization拓?fù)鋬?yōu)化模塊能夠結(jié)合ANSYS Mechanical進(jìn)行強(qiáng)度和頻率兩種分析下的拓?fù)鋬?yōu)化分析計(jì)算,強(qiáng)大的SpaceClaim Direct Modeler能夠繼拓?fù)鋬?yōu)化之后對(duì)于較為粗陋的刻面片體結(jié)構(gòu)完成光順化處理,STL文件生成直接送入3D增材打印機(jī)進(jìn)行打印滿足輕量化設(shè)計(jì)需求。 同時(shí)SpaceClaim Direct Modeler先進(jìn)強(qiáng)大的建模技術(shù)、修復(fù)技術(shù)能使工程師根據(jù)光順后的外觀進(jìn)行建模重構(gòu)獲得三維造型設(shè)計(jì),高級(jí)蒙皮功能技術(shù)能夠最大化保留拓?fù)鋬?yōu)化結(jié)構(gòu)形貌,這些都極大滿足了復(fù)雜裝配體結(jié)構(gòu)安裝、定位、配合、功能等需求。如圖1所示,為某機(jī)械手臂結(jié)構(gòu)拓?fù)鋬?yōu)化與光順化示例。 輕量化設(shè)計(jì)之后,可以考慮重構(gòu)建模和刻面片直接光順化兩種技術(shù),直接用于實(shí)際產(chǎn)品仿真設(shè)計(jì)驗(yàn)證和制造使用,限于筆者個(gè)人運(yùn)用軟件能力和認(rèn)知偏見,重構(gòu)幾何模型同直接刻面光順化模型相比:前者更易對(duì)新方案設(shè)計(jì)跟隨修改,有限元驗(yàn)證計(jì)算過程的網(wǎng)格劃分和加載設(shè)置等控制也相對(duì)簡(jiǎn)單,一般整體外觀不違和,能夠采用增材、CNC以及傳統(tǒng)其他加工方法;后者會(huì)擁有更流暢的幾何過渡轉(zhuǎn)角,造型更為新穎,能一定程度降低應(yīng)力集中,但其他配合結(jié)構(gòu)設(shè)計(jì)變更后,更新拓?fù)涔忭樆瘞缀卧O(shè)計(jì)相對(duì)較為困難,一般由增材制造完成產(chǎn)品制造。 本文以筆者業(yè)余時(shí)間所做的一些拓?fù)鋬?yōu)化及后拓?fù)涮幚砗蟮暮?jiǎn)單實(shí)例為素材,簡(jiǎn)述ANSYS Topology Optimization一般使用過程,限于本文篇幅不對(duì)有限元分析過程、SpaceClaim Direct Modeler拓?fù)浜筇幚磉^程進(jìn)行說(shuō)明,僅對(duì)拓?fù)鋬?yōu)化的一些約束、目標(biāo)等進(jìn)行簡(jiǎn)要介紹。 限于水平有限,錯(cuò)誤必然很多,嚴(yán)禁直接套用于企業(yè)產(chǎn)品分析使用,以免造成重大事故和不必要的財(cái)產(chǎn)損失。僅作為自學(xué)、初學(xué)者交流學(xué)習(xí)作用。
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拓?fù)鋬?yōu)化文獻(xiàn)9篇
1-5.rar Topology optimization 6-9.rar
基于Ansys Topology Optimization 橋梁拓?fù)鋬?yōu)化實(shí)例 ¥10
如本例橋梁為x、y方向?qū)ΨQ,在Topology Optimization欄右鍵添加兩個(gè)Manufacturing Constant,類型選擇Symmetry,分別設(shè)置x對(duì)稱和y對(duì)稱; 點(diǎn)擊計(jì)算,即可得出優(yōu)化結(jié)構(gòu)。 三、 優(yōu)化結(jié)果驗(yàn)算、導(dǎo)出 在Workbench Project界面拖動(dòng)Static Structural到拓?fù)鋬?yōu)化Resule欄創(chuàng)建靜力分析,并共享優(yōu)化結(jié)果; 在拓?fù)鋬?yōu)化Resule欄右鍵Reset,在新靜力分析面板Geometry欄右鍵Update更新數(shù)據(jù),雙擊Geometry計(jì)可啟動(dòng)SCDM打開優(yōu)化結(jié)果,在其中可以對(duì)結(jié)果做整形修改,本例優(yōu)化結(jié)果較好,僅作圓角處理即直接將刻面轉(zhuǎn)化為實(shí)體,抑制原有模型,保留優(yōu)化后轉(zhuǎn)化的實(shí)體模型; 雙擊新Static Structural面板中的Model,同第一次靜力分析,計(jì)算橋面z方向變形結(jié)果。 四、結(jié)果:優(yōu)化后整座橋的質(zhì)量原原設(shè)計(jì)的27.5%(橋面未參與優(yōu)化,仍計(jì)算重量),變形由1.73e-7增大到3.136e-7。
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貢獻(xiàn)一篇英文文章,關(guān)于CAD/CAE集成應(yīng)用
文章名: A proposal of the topology CAD and CAE integrated system for the next generation A Proposal of the Topology CAD and CAE Integrated System for the Next Generation.part3.rar A Proposal of the Topology CAD and CAE Integrated System for the Next Generation.part1.rar A Proposal of the Topology CAD and CAE Integrated System for the Next Generation.part2.rar A Proposal of the Topology CAD and CAE Integrated System for the Next Generation.part6.rar A Proposal of the Topology CAD and CAE Integrated System for the Next Generation.part4.rar A Proposal of the Topology CAD and CAE Integrated System for the Next Generation.part5.rar
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『分享』均勻化方法的經(jīng)典資料
分享一下均勻化方法的經(jīng)典資料: 一 A review of homogenization and topology optimization I—homogenization theory for media with periodic A review of homogenization and topology opimization II—analytical and numerical solution of homogeni A review of homogenization and topology opimization II—analytical and numerical solution of homogeni A review of homogenization and topology optimization III—topology optimization using optimality crit
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新版hypermesh 的相關(guān)操作
<p>-------1.壓縮節(jié)點(diǎn)Suppress fixed point</p><p>&nbsp;-------Topology---Split------Interactive------shift+左鍵</p><p><br></p><p>-------2.壓縮線Suppress Edge</p><p>-------Topology---Quick Edit-------Toggle&nbsp;&nbsp;&nbsp;Edge</p><p><br></p><p>--------3.壓縮邊界Suppress Edge</p><p>---------Stitch&nbsp;&nbsp;&nbsp;Edge</p><p><br></p><p>---------4移動(dòng)組件到另一個(gè)集合</p><p>------Topology---Organize </p><p>&nbsp;</p><p><br></p><p><br></p>
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椎間融合器的拓?fù)鋬?yōu)化
abbr_ the lumbar spine with a new cage using a topology optimization method.part3.rar abbr_ the lumbar spine with a new cage using a topology optimization method.part1.rar abbr_ the lumbar spine with a new cage using a topology optimization method.part2.rar
topology圖2
Trends in Unstructured Mesh Generation論文
MESH DATA STRUCTURE.pdf decimation.doc The Method of Recovery of an Arbitrarily Inserted Edge onto a Pre-Existing Surface Mesh.pdf Structured Topological Complexes - A Feature-based API for Non-Manifold Topologies.pdf The Mesquite Mesh Quality Improvement Toolkit.pdf
『轉(zhuǎn)貼』和大家交流HM學(xué)習(xí)體會(huì)(www.simwe.com)
abbr_ the lumbar spine with a new cage using a topology optimization method[1].part1.rar abbr_ the lumbar spine with a new cage using a topology optimization method[1].part2.rar abbr_ the lumbar spine with a new cage using a topology optimization method[1].part3.rar
Optimisation of a Composite Advanced&nbs
The pseudo-topology optimization problem is formulated and solved using VR&D GENESIS as a constrained sizing optimization problem for minimum strain energy. To improve the computational efficiency of the high-complexity model, the contribution of the geometric stiffness matrix to the buckling sensitivities are ignored with no significant loss of accuracy. Based on the results of the pseudo-topology optimization for the low- and high-complexity models, a detailed finite-element model of the new CAS design with optimal stiffener layout is developed and optimized for minimum weight. Depending upon the degree of variability in skin thickness, the results show a weight saving of up to 19% over the baseline model while satisfying all structural requirements.
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Optimisation of a Composite Advanced&nbs
Summary Guided by the topology optimization results, a new detailed finite element model was developed with the stiffeners placed near their optimal locations. By solving the corresponding constrained sizing optimization problem, the optimal wall thickness values for individual stiffeners and skin panels were obtained.
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