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Areas of Specialization We specialize in the following areas: Stress analysis Composites Structural optimization Fluid-structure interaction Available Services Lightness by Design’s customers are often from very competitive markets, like aerospace and defense, in which product performance is extremely important and failure is not an acceptable alternative.
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In this keynote talk from COMSOL Day: Aerospace & Defense, Hannah Alpert of NASA Ames shares how technologies, like the Air-Cooled Temperature Swing Adsorption Compressor (AC-TSAC), are a promising alternative to the current complex mechanical compressors that are being used on the ISS.
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Due to their exceptional properties like high specific strength, high thermal conductivity, less weight and so forth, they are being used in various industrial applications like electronic packaging, and also in automobile, aerospace, defense sectors. Thus, this paper aims at producing a numerical model of micro machining of various compositions of Al-SiC alloys and studies the effects of various parameters on machining such composites.
论文和技术资料 -
cn.comsol.com/paper/28341
Depending on the frequency, RF radiation can travel through solid insulating structures, typical atmospheric conditions, clouds, and rain with only minimal losses allowing for its use over long ranges and in varied weather conditions. The aerospace and defense industries have expanded and progressed rapidly as a result of using radar systems for detection and classification tasks to determine if an object or target is present, where it is located, and if it is moving or stationary. The prevalent use of radar in the defense industry has naturally created the need for detection avoidance methods in order to maintain a competitive edge.
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Available Services In addition to offering consulting and R&D services, our company also delivers software products to the energy, infrastructure, aerospace, defense, and semiconductor and advanced materials manufacturing industries.
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Our industrial technology solutions span aerospace, defense, automotive, consumer, renewable energy, medical, packaging, infrastructure, and heavy industrial markets.
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About the Author
Gavin Jones, SmartUQ sr. application engineer, is responsible for performing simulation and statistical work for clients in aerospace, defense, automotive, gas turbine, medical device, and other industries.
COMSOL 博客 -
cn.comsol.com/blogs ...
Electroplating is commonly used for surface finishing due to its effectiveness across the automotive, electronics, corrosion protection, aerospace, and defense industries. Since WWII, the number of patents claiming to achieve "perfect plating" has increased exponentially.
COMSOL 博客 -
cn.comsol.com/blogs/the ...
卫星与航天员不断向宇宙更深处探索，给太空通信技术提出了更多难题。本文介绍了各种各样的航天器天线，包括螺旋天线、喇叭天线、抛物面反射器天线及相控阵天线，并探讨了适用于模拟不同类型天线的最优仿真技术。
用户案例 -
cn.comsol.com/story/67761
The residual stresses developed in a stiffened panel manufactured using Electron Beam Freeform Fabrication (EBF3) process were studied. EBF3 process is a layer additive process that can be used to build near-net shaped parts directly using computer controlled techniques, which can be used for aerospace structures.
A COMSOL model was created to simulate the residual stresses using a thermo-mechanical analysis, with the Goldak’s semi ellipsoidal moving heat source.
论文和技术资料 -
cn.comsol.com/paper/4938
隐形飞机和舰船可以通过优化表面的形状使能量反射远离探测源或采用吸收雷达波的材料来躲避雷达探测。但是，如果舰船或飞机的天线需要正常的通讯工作，就不能完全掩蔽它。这也使其成为剩余的具有很大雷达散射截面 (RCS) 的组件之一，而这基本上会破坏整个系统对于雷达的隐形性。
ALTRAN 是全球领先的创新型高科技工程咨询机构，他们正着手设计几何形状构成的频率选择表面，可优化隐形技术。FSS 的性能与其形状、厚度、基片的选择和各个单元之间的定相有关。这其中有很多可能性，而测试每一种可能的物理场对于设计师来说很耗时。ALTRAN 借助 COMSOL Multiphysics 软件进行仿真来研究各种形状和大小的频率响应以及它们在表面上的分布，在短短几分钟内找到值得研究的模型。
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cn.comsol.com/story/16403
Pressure Sensors are widely used in the automotive industry. Their main use is the dynamic monitoring of pressure inside combustion engines. To achieve a good signal accuracy, the design of pressure sensors can be improved with FEM calculations of stress and strains on the measuring cell depending on their geometry and material properties.
The geometry is adapted according to a special nominal pressure and a limit rule of the stresses.
论文和技术资料 -
cn.comsol.com/paper/15540
Particulate reinfoced metal matrix composites (PRMMC) show good combination of strength-to-weight ratio, as a result they are used commonly in fields such as the automotive, aerospace, electronics, among others. Tipical PRMMC are made of metal matrixes such as aluminium and magnesum, whereas reinforcement particles are silicon carbide, alumine, among others. Particle reinforments exhibit angular and circular shapes. Young moduli of PRMMC depend strongly on factors such as the volume fraction reinforcement, particle shape, particle size as well as particle orientation and cohesive forces at the particle-matrix.
论文和技术资料 -
cn.comsol.com/paper/96551
We provide integrated manufacturing system solutions for customers large and small across sectors as diverse as automotive, aerospace, rail, informatics, food and drink, construction engineering, electronics, oil and gas, and defense.
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This presentation summarizes the digital twin (DT) concept and how it can be implemented in COMSOL Multiphysics®. Concepts such as real and virtual spaces, high-fidelity models, and lightweight models are explained in the context of DTs.
cn.comsol.com/presentation ...
FEM (Finite Element Method) modelling software such as COMSOL Multiphysics® can be a powerful tool for modelling the behavior and response of piezoelectric materials and devices [1]. Devices based on piezoelectric crystals are particularly well suited, because the polarization magnitude in crystals is predetermined and its orientation is defined by how it was cut with respect to the lattice structure. In the case of polycrystalline piezoelectric ceramic materials, the overall polarization vector in the material is not oriented in one single direction nor is constant all over the material.
论文和技术资料 -
cn.comsol.com/paper/40351
Microwave drying processes are critical components in the manufacture of cellular ceramic substrates and filters. The objective of this study is to develop a comprehensive model at a small scale and include all the possible physics that are important during microwave drying processes. Based on the results, conclusions are made on the importance of different factors in drying.
论文和技术资料 -
cn.comsol.com/paper/11593
Uncertainty in COMSOL Multiphysics® software simulations due to (a) model parameter uncertainties and (b) mesh-induced truncation errors, is estimated using a design-of-experiments approach [1, 2, 3], and a nonlinear least squares logistics fit method [4, 5], respectively. Examples to illustrate both approaches are given using the COMSOL RF Module (in an application of a MRI coil design) and the Structural Mechanics Module (in a stress analysis of a wrench). Significance and limitations of both methods are presented and discussed.
论文和技术资料 -
cn.comsol.com/paper/23931
Outline of presentation:
In electromagnetic technology applications the finite element method is
very well suited for a wide range of problem types
For many cases, in particular when inhomogeneous materials having
complex properties are involved as well as when multiphysics couplings
are essential, it is the only option available
The somewhat unfavourable performance scaling with problem size is
becoming increasingly compensated by more powerful computers and
more efficient solver routines
A technique to self-consistently include wires and slots, thinner than the
element size, would be highly appreciated
---------------------------------- Keynote speaker's biography:
Göran Eriksson received his Ph.D. in the field of Plasma Physics and Theoretical Electrotechnics from Uppsala University. After working for more than 12 years at Saab AB, mainly with numerical simulations of electromagnetic phenomena such as lightning damage effects, he is now employed by ABB Corporate Research. His work is focused towards electromagnetic and multiphysics modeling of high voltage power products and system components.
论文和技术资料 -
cn.comsol.com/paper/7215
Micro-scale devices based on the Stirling cycle are an attractive choice for chip- and board-level electronics.
A new Stirling cycle micro-refrigeration system composed of arrays of silicon MEMS cooling elements has been designed. COMSOL is used to evaluate the thermal performance of the system. Simulation of compressible flow and heat transfer with a large deformed mesh has been successfully implemented and is used to determine the cooling capacity and coefficient of performance, COP.
论文和技术资料 -
cn.comsol.com/paper/10684