SIMULIA 리소스 센터

Heat exchangers are essential components in many engineering processes in industries. Helical baffle and segmental baffle are two major types of shell and tube heat exchangers. Helical baffle heat exchangers offer lower pressure drops and higher heat transfer efficiency as compared to segmental baffles. In present work, numerical simulations are performed on a helical baffle heat exchanger using 3DEXPERIENCE flow simulation application to predict heat transfer and pressure drop. Since helical baffle inclination angle is an important design parameter, a parametric study is carried out to evaluate its effect on pressure drop and heat transfer. Optimum baffle angle found in the present study is baffle angle of 350 for which pressure drop and heat transfer is best.

Customer Papers

Expandable sand screens are a sand control system, which is used to control the ingress of solids in oil and gas reservoirs with weak and unconsolidated formations. There are two different variations of expandable screens; a system based on a slotted basepipe which are easy to expand compliant to the formation but is relatively low in strength and a system based on a drilled basepipe which is very strong but is more difficult to expand compliantly. The model was used to study the effects of formation screen interactions in inclined wellbores, through multiple rock layers. The model is also routinely used to study new applications for potential problems.

Customer Papers

Automotive engine valves draw the air and fuel into the cylinders and allow the exhaust gas out. The valves are under various loads during the engine running: a combustion pressure, a spring force, thermal loads and the impact force due to valve closing speed. Their combined loads sometimes lead a valve fracture. In this paper, the failure behavior in the exhaust valve is investigated with the finite element methods. An implicit time integration method is used to simulate the transient dynamic behavior of the valve. The stresses results by FEA were in good agreement with the measured data under a valve train rig test.This study showed the durability of the valve neck, the most common failure position, is subject to various factors such as the partial contact due to the thermal deformation of the valve seat, the degradation of material strength due to high temperature, the dynamic load when the valve closes.

Customer Papers

Concrete anchors are critical fastening elements in transferring structural load to concrete foundation. In this case study, cast-in-place mechanical anchors with local reinforcement were modeled using SIMULIA Abaqus. Steel anchor bolt and rebars were modeled using elasticplastic material, and concrete slab was modeled using concrete damage plasticity model. Because of the large model, contact, and damage failure procedure were involved, parallel computing had to be employed to speed up the solution process. The UberCloud HPC Experiment provided a great opportunity to tap into HPC resource in the cloud.

Customer Papers

In a previous study, the authors presented the development of knitted fabric models for finite element analysis to simulate the large deformation behavior of garments and the distribution of clothing pressure on the human body in a stationary position. This paper describes an extension of the investigation to a study of the human body in motion. The study accomplished a fully automatic simulation of the clothing pressure change in T-shirts during jogging. The analysis technique is expected to be utilized in the development of a stabilized electrocardiogram measurement for a person during exercise.

Customer Papers

Package technology is constantly improving in order to keep up with the advances in silicon technology. Multi layered packages exhibit several failure modes that can be predicted using modern software tools. This paper provides a methodology for creating a high-fidelity model of the interposer with all the conductor geometries in Abaqus/CAE. The two failure modes that are explored with this model are package warpage prediction due to actual copper imbalance and filled microvia delamination. Each layer can meshed based on the actual geometry in the layout design. Package warpage is caused by copper imbalance between the two sides of the interposer.

Customer Papers

Self piercing riveting (SPR) is a cold joining technique used in the automotive industry replacing the resistance spot welding. SPR creates a strong mechanical attachment between two or more similar or dissimilar sheets using a semi tubular rivet forge with a die. The number of sheet material combinations is increasing as vehicle design becomes more complex. Improving the mechanical properties of the rivet will enable greater versatility of standard rivet and die combinations. A 3D model of a prototype rivet during forging was developed, different die velocities and material hardness were analyzed aiming to validate the performance of a Boron steel (10B37), focus was set on the rivet, different mesh densities were assessed, the material behavior was input via tensile testing data obtained with wire samples according to ASTM E8 standard, while the die was assumed in all cases analytical rigid, also the influence of friction was studied.

Customer Papers

Molybdenum’s high melting point, high electrical conductivity, resistance to sagging at glass bath temperatures, and resistance to attack by most glasses make it an ideal material for glass melting electrodes. However, dissolution of molybdenum electrodes still occurs during glass melting and processing. A single piece molybdenum electrode was found to have cracked at the end of its service life. Post-mortem analyses also showed melting of the molybdenum material in the crack region. Finite element simulations using Abaqus were used to evaluate the crack formation. This study involved coupled thermal-mechanical modeling to predict the crack size and location. The FEA model was qualitatively successful in predicting the crack morphology based on very limited operational knowledge. The simulation results were compared with experimental results to evaluate necessary design changes for improving electrode life.

Customer Papers

The critical flaw size is computed for a cracked nozzle in a reactor pressure vessel using a ductile tearing instability assessment and is compared to the Failure Assessment Diagram method. A material resistance J-R curve and elastic-plastic finite element analyses are used to evaluate the crack stability. The expectation is that the critical crack size will be larger from the tearing instability assessment compared to the FAD assessment, since the rising J-R curve gives higher toughness as stable tearing occurs. A reactor pressure vessel nozzle geometry with a postulated surface crack is used as an example to examine the analysis details and common difficulties encountered when creating the crack model, obtaining the necessary elastic-plastic FEA convergence to compute the J-integral values, and determining the tearing stability point.

Customer Papers

This report describes the result of a research project focused on driver’s brain damage evaluation during front impact of the Baja SAE race car to a wall. Two kinds of situation were considered in this analysis: a driver with and without a seat belt. The goal of this project is to check the amount of stress absorbed by the brain during impact and evaluate the role of the seat belt during impact. The analysis consists of a dynamic simulation of an impact of a car frame on a wall by using Finite Element Analysis (FEA) method. Models were meshed by using HyperMesh (a FEA pre-processing software). After finishing modeling, results were calculated and analyzed by using the Abaqus/Explicit (a computer aided engineering program) explicit solver. Results focus on the stresses, also will include energy, velocity, acceleration and displacements experienced by the following elements of model: brain, neck, dummy body and car frame. The results obtained from the analysis were displayed through charts.

Customer Papers

Rapid heating and cooling in the Selective Laser Melting (SLM) additive manufacturing process generates large amounts of tensile residual stresses in the component. These stresses lead to part distortions and poor product performance. In most cases, distortions become more significant after cutting the part from the build tray and removing support structures. In this study, a complex topology optimized Gimbal Mount was considered for physical printing and finite element analysis of the print process. Th component was printed using Ti6Al4V material on an SLM machine and measurement points were taken on its outer profile. This data was compared with original geometry and simulation results. A good agreement was found between simulation and experimental results which was helpful in part development and establishing the technology.

Customer Papers

In the production process of running shoes, multiple requirement functions such as stability, cushioning, and comfort must be designed. Especially a lot of researchers have pointed out the importance of stability which means the management of excessive foot joint motions, because the long term running with poor stability shoes causes various lower extremity injuries. In this study, running shoe stability prediction method is proposed by using Abaqus. The numerical foot model constructed by stacking computed tomography images has 24 bones, cartilage, soft tissue, plantar fascia, and 3 ligaments. As loading conditions, the forces and torques at the ankle joint which can be obtained by the inverse dynamics of the 3-dimensional ground reaction forces during the contact phase in running were used.

Customer Papers

Two engineering fields that are advancing rapidly are soft robotics and biomimicry;...

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Contact and Convergence in Abaqus/Standard The really interesting finite-element models, like the...

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This article was written by Behnam Dastvareh. Behnam is a Computational Fluid...

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As products get more complex, simulation models are moving from analyzing single...

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1. 배경 초음파 진동자는 압전소자의 축방향 진동을 증폭하는 구조물로 아래 Fig. 1 처럼 세 개의 부품으로 구성됩니다. 각 부품은 압전소자의 가진주파수에 해당하는 고유주파수를 갖도록 설계되며 공진에 의해 진폭이 극대화되는 원리입니다. 초음파 진동자는 용액 mixing,

기사

This blog was originally published in December 2020. 2020 has reminded us...

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This blog was originally published in July 2020. Introduction 5G is often...

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CST에서는 BUS-BAR에 흐르는 전류 분석과 전류에 의한 발열 문제 그리고 발열에 의한 구조적 변형 해석 등이 가능합니다. 그 뿐만 아니라 센서, 모터, 액추에이터, 변압기 등에 주요한 전기차 부품의 해석 검증이 가능합니다.

기사

Abaqus의 Plug-in제품인 Wound Composite Modeler를 활용하여 복합재 고압 수소 탱크의 해석 자동화 및 winding 각도 최적화를 수행할 수 있습니다.

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PowerTHERM에서는 전기자동차에 사용되는 고전압 리튬이온배터리의 단품, 패키지 및 시스템 전체를 고려한 열 해석을 지원하는 열 해석 모듈을 제공합니다.

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The efficient simulation of periodic structures and their application in radome design...

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Wind energy is a promising source of alternative, non-fossil-fuel-based electricity. Wind turbines...

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