Simulation-based Prediction Model of the Auto-body Multi-Stage Forming Process

Abstract Mechanical means of positioning are frequently used in mechanical assembly processes. However, very little attention has been paid to the selection of mechanical alignment systems (MAS) for assembly processes. Our analysis shows that if the MAS are not properly selected, the form errors as well surface waviness and roughness of the workpieces to be assembled can badly limit the level of accuracy achievable. A simulation-based methodology is described to study the alignment accuracy for multi-stage processes. Such cases are common, where fabrication operations are done on parts before they are assembled. The study shows that if the workpieces are aligned in the same orientation, using similar or identical MAS for the fabrication processes and assembly processes, then the effect of the form errors as well as surface waviness and roughness of the workpieces can be greatly suppressed.

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Optimization of fiber prediction model coefficients in injection molding simulation based on micro computed tomography

Polymer Engineering & Science ◽

10.1002/pen.25013 ◽

2018 ◽

Vol 59 (s2) ◽

pp. E152-E160 ◽

Cited By ~ 1

Author(s):

Matthias Morak ◽

Daniel Tscharnuter ◽

Thomas Lucyshyn ◽

Wolfram Hahn ◽

Michael Göttlinger ◽

...

Keyword(s):

Computed Tomography ◽

Injection Molding ◽

Prediction Model ◽

Micro Computed Tomography ◽

Simulation Based ◽

Injection Molding Simulation

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Simulation-Based Tracking of UOE Pipe Yield Strength Considering Various Thickness-to-Diameter Ratios

Volume 3: Structures, Safety, and Reliability ◽

10.1115/omae2018-77786 ◽

2018 ◽

Cited By ~ 1

Author(s):

Jiwoon Yi ◽

Soo-Chang Kang ◽

Hyun-Moo Koh ◽

Jinkyo F. Choo

Keyword(s):

Yield Strength ◽

Bauschinger Effect ◽

Steel Plate ◽

Tensile Yield Strength ◽

Forming Process ◽

Factors Influencing ◽

Simulation Based ◽

Plastic Forming ◽

Final Yield ◽

Flattening Process

The plastic forming processes involved in the production of UOE pipes alter significantly the yield strength of the original steel plate. Numerous studies indicated that the work hardening and Bauschinger effect are the main factors influencing the alteration of the yield strength. Moreover, apart from the forming process itself, the flattening executed on strips sampled from the formed pipe appears to have also nonnegligible effect on the final yield strength that is used as quality index of the formed pipe. Therefore, this study tracks the yield strength of UOE pipe made of API-X70 steel with various thickness-to-diameter ratios by FE-simulation of the forming and flattening processes so as to identify the factors influencing the yield strength of the UOE pipe. The results show that the flattening process constitutes a critical phase in which steel experiences large loss of its tensile yield strength.

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Application of FMI in Metal Casting Press-Forming Process

Volume 3: Computational Fluid Dynamics; Micro and Nano Fluid Dynamics ◽

10.1115/fedsm2020-20063 ◽

2020 ◽

Author(s):

Zhong Xingli ◽

Ji Linhong ◽

Li Sheng ◽

Lu Yijia

Keyword(s):

Coupling Effect ◽

Computation Time ◽

System Level ◽

Metal Casting ◽

Hydraulic Systems ◽

Forming Process ◽

Modeling Tools ◽

System Level Simulation ◽

Press Forming ◽

Simulation Based

Abstract Accurate simulation of metal casting press-forming process needs to consider mutual coupling effects in a number of different fields of physics subsystem. Hydraulic systems, control systems and mechanical systems are the most important subsystems among them. It is difficult to create various subsystems in detail in a single modeling tools, so co-simulation technology is used to take advantage of different tools to achieve the entire physical process of system-level simulation. The paper researched the co-simulation in the Abaqus software and the Matlab software based on FMI standard, considered fully the coupling effect between different systems, and simulated the metal casting press-forming process. The simulation results showed that co-simulation based on FMI standard can be well suited for multi-disciplinary co-simulation in complex mechanical model, and played a well-guiding role in the engineering design. The co-simulation would take more computation time than traditional simulation, but it can be achieved to research the integrated features of system and to reduce greatly experiments costs and prototype trial risks by using this technology.

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A simulation-based prediction model for coal-fired power plant condenser maintenance

Applied Thermal Engineering ◽

10.1016/j.applthermaleng.2020.115294 ◽

2020 ◽

Vol 174 ◽

pp. 115294 ◽

Cited By ~ 1

Author(s):

I. Mathews ◽

E.H. Mathews ◽

J.H. van Laar ◽

W. Hamer ◽

M. Kleingeld

Keyword(s):

Power Plant ◽

Prediction Model ◽

Simulation Based

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STUDY ON THE INFLUENCE LAWS OF MECHANICAL PROPERTIES ON STIFFNESS OF AUTOMOTIVE BODY PANELS

International Journal of Modern Physics B ◽

10.1142/s021797920906138x ◽

2009 ◽

Vol 23 (06n07) ◽

pp. 1634-1639 ◽

Cited By ~ 2

Author(s):

LIHONG ZHAO ◽

SHUYONG JIANG ◽

ZHENG YI REN ◽

HAIPING YU ◽

YUYING YANG

Keyword(s):

Mechanical Properties ◽

Yield Strength ◽

Strain Hardening ◽

Shallow Shell ◽

Anisotropy Parameter ◽

Weight Coefficient ◽

Great Accuracy ◽

Strain Hardening Exponent ◽

Forming Process ◽

Auto Body

The criterion and research technique of auto body panels stiffness are introduced in this work, and the finite element models (FEM) of cylindrical shallow shell that could represent auto body panels are established. Simulations of forming, springback and stiffness on cylindrical shallow shell are carried out. The simulations show great accuracy with the experimental results. Extensive simulated results of the influence laws of material mechanical properties on stiffness are achieved, such as yield strength, strain-hardening exponent, Young's modulus, anisotropy parameter and strength coefficient. With comparison of the weight coefficient of material mechanical properties on stiffness, it can be concluded that the Yong's modulus, strain-hardening exponent and yield strength are key influencing factors of stiffness. With the analysis of distribution of the strain after cylindrical shallow shell forming, plastic deformation during the forming process resulting in work-hardening of the material is one of the main reasons for increasing stiffness.

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Numerical Simulation and Optimisation of Sheet Metal Forming for Auto-Body Panel Using AutoForm Software

Materials Science Forum ◽

10.4028/www.scientific.net/msf.561-565.1911 ◽

2007 ◽

Vol 561-565 ◽

pp. 1911-1914 ◽

Cited By ~ 1

Author(s):

Xuan Zhi Wang ◽

Syed H. Masood ◽

M. Dingle

Keyword(s):

Sheet Metal ◽

Sheet Metal Forming ◽

Metal Forming ◽

Forming Process ◽

Simulation Methodology ◽

Design Engineers ◽

Whole Process ◽

Auto Body ◽

Crucial Parameter ◽

Body Panel

This paper focuses on a rapid simulation methodology for sheet metal forming, using AutoForm™ software, for an auto-body panel. An engine hood is selected as a sample part. Simulation of the whole process cycle, including drawing, cutting and flanging is presented generally. According to the required outer surface forming quality, the dominant parameter is determined firstly from various parameters using AutoForm™ sigma module. The optimisation of the dominant parameters is then performed to obtain the best result. This methodology can decrease the optimisation time and predict the most crucial parameter in the forming process for design engineers, which can dramatically reduce the lead time of automobile industries.

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