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Company:

Leonardo Company

Products:

Digimat

Industries:

Overview:
复合材料结构的设计与验证需要获得相关材料准确强度数值,也就是所谓的A&B-基准许用值。此类许用值测试的主要需求是收集航空器所用结构部件不同构型材料的相关许用值。其中的一项测试旨在对拉伸以及压缩条件下的螺栓进行填孔试样测试,例如对通过平头或沉头安装方法固定在中央孔洞内的螺栓进行强度测试。采用垂直解决方案例如Digimat VA试样级别许用值法可以研究分析相关设计方案中所有的材料结构,并对复合材料的各类允许用值进行实际计算。该研究项目的目的在于预测并验证室温环境下(RTA)填孔试样的平均强度值与B-基础许用值。本项目使用的是体积分数为58%的碳纤维准各向同性铺层材料。

 
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Company:

麦哲伦望远镜

Products:

Digimat

Industries:

Overview:
宇宙来自何方?许多著名的科学家如伽利略、哥白尼、爱因斯坦等,穷尽了毕生的精力试图解答这个永恒的问题。直到今天,探索宇宙的起源仍然是个热门话题。为此,巨型麦哲伦望远镜的工作团队建起了一部200英尺高的巨型望远镜,希望它能有助于解答那些困扰科学家和科幻爱好者的问题,如:宇宙中是否还存在其它生命?最初的星系是怎么形成的?宇宙最终将走向何方?巨型麦哲伦望远镜无疑最适合这方面的研究,相比其它天文望远镜,它能收集更多的光,而且有着极高的分辨率(目前天文望远镜中最高)。该项目受到了Astronomy Australia(澳大利亚天文研究)有限公司、卡内基天文台、哈佛大学以及全球其它一些顶尖大学和研究机构的资助。考虑到巨型望远镜结构的复杂性、镜片装置以及运行中的移动等因素,巨型麦哲伦望远镜组织的工程师团队使用MSC软件的模拟工具——MSC Apex,缩短了设计时间,同时简化了仿真工作流程。
Challenge:
巨型麦哲伦望远镜的安置地点为拉斯坎帕纳斯天文台,位于智利一座山的山顶。这里远离人口聚集地区,气候干燥,是地球上光污染最少的地区之一。独一无二的天空黑度和海拔使该天文台成为了一个完美的天文观测地点。 虽然该山顶有着广阔的视野,在观测方面有很大优势,但智利频繁发生震级不小的地震给工程师们的工作带来了挑战。巨型麦哲伦望远镜将设立在一幢22层的巨大建筑中,该建筑必须能抵御里氏震级8.0以上级别的地震冲击,这意味着精密而准确的测试是至关重要的。此外,由于较高的海拔,风速带来的影响也不可忽视。 除了环境因素,望远镜自身的设计和测试也是个极大的难题。巨型麦哲伦望远镜由不同尺寸的多个动态、可移动单镜组成。主镜面的直径达到了25米,多个辅镜的面积总和达到了4000平方英尺。望远镜的建筑为穹顶建筑,这意味着强风可推动主镜和辅镜移动。但巨型结构的设计必须能保持稳定,不受风力和温度条件的影响,以便光学系统能始终精确地工作。
Solution:
“很简单,我使用MSC Apex的原因就是因为它的集成度——输入几何结构、几何修复、网格划分、分析,然后在集成工具中高水平地进行后期处理,每一步都令人印象深刻。软件使用起来非常方便,效率非常高。” 巨型麦哲伦望远镜的结构工程师Paul Rasmussen说。

 
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Company:

Giant Magellan Telescope

Products:

MSC Apex

Industries:

Aerospace

Overview:

Where did our universe come from? Since the beginning of time, astronomers and physicists such as Galileo, Copernicus, and Einstein have dedicated their life’s work to this timeless question. Even today, investigating the universe’s origins remains hotly debated. To help answer this, the team at the Giant Magellan Telescope is building a 200 foot-high telescope that will help scientists uncover what has plagued scientists and science fiction enthusiasts alike: Are we alone? How did the first galaxies form? What is the fate of the universe? The GMT is uniquely poised to answer these questions due to its ability to collect more light than other telescopes and to its’ uniquely high resolution (which will be the highest ever achieved in a telescope). The project is sponsored by Astronomy Australia Limited, Carnegie Observatories, Harvard University, and other leading universities and research institutions from around the globe. Due to the complexity of the structure, placement of mirrors, and movements that will occur during operation of the telescope, the engineering team at GMTO used MSC Software’s simulation tool, MSC Apex, to simplify and shorten their design and simulation workflow.

Results Validation:

MSC Apex’s dynamic components for design, specifically its importing utility and meshing features, were instrumental in the design and analysis of the GMT. The software was essential in helping to identify particular wind dynamics issues during the design process, which allowed developers to save time and increase productivity. MSC Apex became a critical tool in the GMT’s design process due to its easy user interface and customized meshing and simulation features. With the aid of MSC Apex, engineers at GMTO will be able to answer some of the toughest questions faced by mankind in a more streamlined, efficient way than ever before.

Benefits:

Increased productivity by utilizing MSC Apex Fossa to save time during the design process


 
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Company:

Kyusyu Sangyo University

Products:

Adams

Industries:

Machinery

Overview:

One of the most prominent areas of focus in the robotics industry today is the design of more human-like robots. Giving human features to robots offers tremendous advantages compared to traditional designs; for example, some robots are now designed with human-like legs rather than wheels, which enables them to move more easily in dangerous environments and over obstacles.

Results Validation:

“Prototypes of the ADDAM robot and the robotic arm were built and performed as predicted by the simulation with a high degree of fidelity. The ADDAM robot demonstrated human-like walking capabilities and met all of our other design objectives. The robotic arm can lift an object greater than 5 kg even though its own mass is only 2.2 kg.” - YongKwun Lee, Professor in the Department of Biorobotics in Kyusyu Sangyo University.

Researchers are planning to improve on the design of ADDAM by using multibody simulation to further improve the capabilities of ADDAM, such as by enabling it to perform fast walking, running, jumping, turning, and lifting heavy weights.

Benefits:
  • Adams simulation results achieved good correlation with physical measurements
  • Design of Experiments was applied on the robot model to optimize each design parameter using Adams
  • Prototypes of the ADDAM robot and the robotic arm were built and performed as predicted by the simulation with a high degree of fidelity

 
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Company:

密苏里大学

Products:

Adams

Industries:

Medical Devices

Overview:
人类曾经探索过太空、大洋深处,并能回溯过去数百万年的历史。但是,在对人体及其工作方式的认知方面,仍然存在着惊人的大量空白。例如,膝关节处于足底到骨盆的动力学链的中心点。但胫骨与股骨之间的连接所形成的几何约束却微乎其微。需经由大量软组织结构的运作来实现膝关节的稳定性。这些结构的详细工作方式在很大程度上仍是未知的。MSC 的 Adams 是一种多体动力学仿真解决方案,可提供正确的深入分析,有助于更加透彻地了解膝关节的内部运作。
Results Validation:
MAC 研究人员采用 Adams 多体动力学软件来开发最全面、最逼真的膝关节仿真。他们首先为受试者配装标示器。他们利用一个运动捕获系统来记录受试者在实验室内行走、活动时这些标识器的移动。通过核磁共振成像(MRI)技术捕捉骨骼、软骨、半月板及韧带的图像。利用测力板来测量地面接触力、利用 EMG(肌电图)来测量肌肉活动。 然后用采集到的数据来创建每个受试者的各个内部肌骨胳系统的 Adams模型。每个模型由 21 个刚体节段、 53 个旋转关节以及 43 块腿部肌肉组成。定义每个标示器位置的运动约束,并在约束与相应的体节之间放置一个三轴弹簧。这样就能实现刚体骨骼相对于运动约束的移动。将核磁共振成像衍生出的皮肤几何体分为五个刚性体,藉此对足底与地面的接触进行建模。然后定义上述刚体与地面的接触为刚柔接触。 采集这些实验性运动数据能够为模型运动时提供约束下的步态动力学输入。模型受到关节、膝盖处的接触和韧带力以及地面接触力的约束。为确定运动期间的肌力和膝盖荷载进行了一次向前步行的动力学仿真,预测了膝盖组成部分之间的接触力,例如胫骨与半月板之间、胫骨与股骨之间的接触力,以及作用在膝盖韧带上的作用力,例如前十字韧带(ACL)。

 
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Company:

Sant Longowal Institute of Engineering & Technology

Products:

Marc

Industries:

Aerospace
Automotive
Machinery
Rail
Shipbuilding

Overview:

Welding is a common practice in the automotive, aerospace, railways, ship building, and machinery industries. It allows for the joining of components by subjecting them to intense localized heat which melts and coalesces the material in the welded region, forming a permanent joint. Multiple process parameters influence the effectiveness of the welding, which include energy source, shape and size of the melt zone, heat affected zone, and speed. Understanding and improving this challenging process through physical iteration can be time consuming and expensive. MSC’s Marc, a nonlinear finite element analysis tool, can provide the required insights needed to solve these parameters in a cost-effective manner.

Results Validation:

The model demonstrated the effects of thermal contact at the joint interface during GTAW welding of the dissimilar materials, and the influence of transverse offsetting of the arc away from the weld line. “We found Marc to be very good in simulating the complex physics of the welding problems. Matching results with experimental data demonstrated that this approach can be used to significant costs by reducing material waste and improving life of the welded parts,” says Singh.

Benefits:
  • Easily try alternative approaches without having to invest in physical experimentation
  • Gain greater insight into temperature gradients with simulation, which are harder to measure in physical tests

 
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Company:

University of Missouri

Products:

Adams

Industries:

Medical Devices

Overview:

Mankind has explored the galaxies, the depths of the sea, and looked back millions of years into the past. But, there are still some surprisingly large gaps in our understanding of the human body and how it works. For example, the knee joint is at the center of the kinetic chain running from the foot to the pelvis. But the connection between the tibia and femur provides very little geometric constraint. Knee stability is achieved through the operation of a multitude of soft tissue structures. The details of how these structures work are still largely a mystery. MSC’s Adams, a multibody dynamics simulation solution, can provide the right insights to help get a better understanding of the inner workings of the knee.

Results Validation:

With the use of Adams, MAC researchers have begun to take the steps to grasp the complexity of the menisci function in the knee. They found that increasing the ligament length by about 20% will result in almost a complete loss of force transfer through the menisci during walking. The reduction in the forces absorbed by the menisci increases the forces that were directly transmitted between the tibia and femur, increasing the potential for joint damage and pain. These results will enable researchers and physicians to target and prevent future pain and damage more efficiently than ever before.

Benefits:
  • Predicts ground reaction forces with over 90% correlation to physical results
  • Accurately predicts internal contact forces
  • Determines effect of slack in menisci

 
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Company:

GE Tidal Turbines

Products:

Adams
Adams Machinery
MSC Nastran

Industries:

Energy

Overview:

There are many coastal areas where local geography constrains the movement of ocean tides, resulting in very strong currents. Water is 800 times denser than air so these currents could potentially generate a lot of electricity. GE tidal turbine technology brings proven concepts and industry-leading knowledge to tap into this reliable and predictable energy source. The Oceade* tidal turbine features a buoyant nacelle that enables the turbine to be easily towed to and from the operating site. This eliminates the need for specialist vessels, reducing the cost of installation and maintenance. GE has proven its Oceade* turbine operating at a full 1 Megawatt, injecting over 1.2 GWh of electricity to the grid. This test program has enabled GE to validate the installation and retrieval processes, autonomous running, and the performance and power curve of the new turbine.

Results Validation:

The simulation results provided the information to evaluate the dynamic response of the proposed design prior to investing in a physical prototype and testing. Based on the results, GE design assumptions and margins were verified and opportunities for optimization identified. The company is now moving forward to the testing phase confident that the design has been “de-risked” from a dynamic as well as a kinematic standpoint. “This project was a great working experience that allowed the GE team and MSC consultants to share knowledge and gain experience from their own respective expertise,” concluded Valentin Radigois, Lead Engineer, Mechanical- Components, GE Renewable Energy.

Benefits:
  • Predict the dynamic behavior of the turbine including multiple flexible components
  • Integrate real bearing and gear effect including 3D contacts
  • Simulate various dynamic loads to evaluate complex behaviors and coupling effects
  • Performed modal analysis of the full structure

 
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Company:

Products:

Simufact

Industries:

Energy

Overview:
用于集装箱船的大型柴油发动机曲轴通常以中小批量方式锻造。由于每个曲轴都有其具体特征,因此这些曲轴的制造与设计是一项挑战。而这正是成型仿真技术大显身手之处。Wildauer Schmiedewerke GmbH 是欧洲少数几家能够制造此类“卡钳”的公司之一。Wildauer 的旗舰型压机是一款 630 kJ 锻锤,能够锻造重达 3500 kg 的模锻部件。Wildauer Schmiedewerke 的客户几乎囊括所有为造船、柴油机车及发电机制造大型柴油发动机的厂家。 过去六年里,Schmiedag 一直使用 Simufact.forming 进行成型仿真。自那时起,该公司对锻模中的材料流、飞边形成以及不同锻模及工件形状的变形进行了虚拟分析和优化。以前是先制作模具,然后根据熟练工人所掌握的知识进行锻件试验。这种方法需要三到四个改型。如今借助仿真,最多只需要两个改型就可以得到满意的结果。

 
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Company:

Products:

Simufact

Industries:

Energy

Overview:
1996 年,Uponor公司决定开始自行生产以前一直从外部厂商处购买的金属配件。原因在于这样可以更好、更灵活地应对此类零部件的需求。首先,在开姆尼茨的弗劳恩霍夫研究所(IWU)的支持下完成了开发成型工艺所需的仿真。然后由 Uponor 对零部件进行测试和生产。 经过一段相对较短的时间后,可以很明显地看出,Uponor公司自己直接进行仿真更为有利。公司内部进行仿真在灵活性和时间方面能为工艺开发带来许多优势。此外,还可以大幅降低长期的工艺成本。如今,在从事锻造业务 12 年之后,Uponor 采用了预先对锻造工艺进行仿真和优化的方法,事实证明这种方法不仅可靠,而且效率极高。Uponor 将 Simufact.forming 用于成型过程的仿真,该仿真环境由位于汉堡的 Simufact Engineering GmbH 提供,专门针对金属成型行业的实际应用而开发。借助这一软件,可在进行首次试制之前即完成对成型工艺和模具进行评估和优化。

 
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Company:

Tower International

Products:

Marc

Industries:

Automotive

Overview:

Stamping operations used to form metallic automotive components can generate forces of thousands of tons. The tools (die components) that form these products must be able to withstand this cyclic loading environment for the life of the vehicle program. At the same time, it is important to optimize the tool design in order to be competitive. The evolution of higher strength materials also adds to the challenge. The large loads involved in forming these components increase the challenge of designing robust tools. Both linear and non-linear analysis must be used to support the tool design process.

Results Validation:

“In order to get reliable predictions, we prefer to use the nonlinear software Marc to solve these types of problems because it accounts for the inherent nonlinearities of materials experiencing plastic strain,” said Yueming Cheng, Computer Aided Engineering Engineer at Tower International. “In years of using Marc and Mentat, I have found it to be capable of accurately simulating a wide range of nonlinear product behavior under static, dynamic and multi-physics loading scenarios. Marc is also one of the commercial solutions in markets I am aware of that has robust manufacturing simulation capabilities, with the ability to predict general damage, failure and crack propagation.”

Benefits:
  • Accurate simulations help reduce risk of downtime and lost revenues, by predicting regions of potential failure
  • Get the design right the first time with computer models and deliver reliable performance

 
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Company:

比利时建筑研究所

Products:

Actran Acoustics
Actran AeroAcoustics
Actran DGM
Actran for Trimmed Body
Actran SNGR
Actran TM
Actran VI
Actran VibroAcoustics

Industries:

Automotive

Overview:
比利时的住宅标准((NBN-S01-400-1(2008))采取了严格的声学要求,这给建筑师们带来了严峻的挑战。此标准尤其针对各个房间之间的整体隔音性能制定了苛刻的要求,该性能主要是由直接传声和侧墙传声决定的。侧墙传声是指在其中一个房间所产生的声波会激励墙壁结构生成结构波,并经由该结构传播结构波。随后墙壁会向隔壁房间辐射声音。两个相邻房间之间有四个接合部,每个接合部有三种侧墙传声路径,总共 12 个路径。当声波穿过接合部时,其能量会衰减,衰减程度由振动衰减指数 Kij 确定。

 
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Company:

LuK USA LLC、Schaeffler Group Automotive

Products:

Simufact

Industries:

Automotive

Overview:
在汽车行业,创新的产品设计与制造解决方案是保持竞争力的根本所在。所加工的零部件和子系统不仅要达到最高质量标准,还要具有价格竞争力。由于这些零部件通常为量产,因此只要有一个零部件失效,就可导致非常昂贵的召回,甚至会有损于厂商的声誉。因此要求设计及仿真解决方案所提供的环境能够提供一种成熟而可靠的方式,既能储备更多有关最佳设计及制造工艺的知识,又能够让工程师找到创新的解决方案。

 
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Company:

上海交通大学

Products:

Adams
Adams Machinery

Industries:

Machinery

Overview:
上海交通大学的研究人员,其中包括上海交通大学机械系统与振动国家实验室主任高峰博士以及上海交通大学博士后研究员潘阳博士,设计了章鱼 III 六腿机器人,可用于在核辐射、火灾及水下等极端环境中进行移动、搜索、探测、修理及救援。六腿章鱼 III 机器人可利用有腿机器人的非常规能力,例如横动崎岖地形、克服障碍、进行垂直爬升以及翻倒后自动站立等。

 
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Company:

Demshe Forge Inc.

Products:

Simufact

Industries:

Machinery

Challenge:
加工制造过程中,锻件出现了折皱,零件报废
Solution:
锻造工艺仿真及重新设计
Results Validation:
采用 Simufact.forming 仿真环境对这一工艺重新进行设计及优化。Demshe Forge 的工程经理 Ramachandran 是设计和仿真方面的专家,他建立仿真成型工艺过程,并且优化工艺参数,避免在关键区域出现折叠,零件最终达到了理想的形状。

 
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