Dynamic analysis and optimal design of exposure device of laser detector based on a virtual prototype

2009 ◽  
Author(s):  
Da Xu ◽  
Jian-xun Zhao ◽  
Jun-biao Hu ◽  
Hua Li ◽  
Chuan-you Wang ◽  
...  
Keyword(s):  
Optimal Design ◽  
Dynamic Analysis ◽  
Virtual Prototype ◽  
Laser Detector

Optimal Design of Computerized Flat Knitting Machine Cam Curves Based on UG and ANSYS/LS-DYNA

2014 ◽  
Vol 529 ◽  
pp. 410-414
Author(s):  
Cang Zhao ◽  
Guang Li Song ◽  
Lei Xu
Keyword(s):  
Finite Element ◽  
Optimal Design ◽  
Dynamic Analysis ◽  
Maximum Stress ◽  
Analysis Software ◽  
Forming Process ◽  
Polynomial Curve ◽  
Circular Arcs ◽  
Design Software ◽  
Straight Lines

By combining the industrial design software UG and finite element dynamic analysis software ANSYS/LS-DYNA, the paper respectively designs the non-linear knitting cams with polynomial curves, and simulates the loop-forming process in the interaction between the cams and needles. Based on comparative analyses, it’s thereby concluded that the polynomial curve has the best performance and is significantly superior to the cam curve composed of straight-lines and circular-arcs; the elements with higher stresses are located above the butt of needle jack and the joint of the jack and latch needle; and the polynomial curve is effective in lowering the maximum stress of the needle.

Analysis and Optimal Design of Spatial Mechanical Systems

1987 ◽  
Author(s):  
H. Ashrafeiuon ◽  
N. K. Mani
Keyword(s):  
Sensitivity Analysis ◽  
Optimal Design ◽  
Dynamic Analysis ◽  
Equations Of Motion ◽  
Mechanical Systems ◽  
Design Sensitivity ◽  
General Purpose ◽  
Design Sensitivity Analysis ◽  
Analysis And Design ◽  
Spatial Systems

Abstract This paper presents a new approach to optimal design of large multibody spatial mechanical systems. This approach uses symbolic computing to generate the necessary equations for dynamic analysis and design sensitivity analysis. Identification of system topology is carried out using graph theory. The equations of motion are formulated in terms of relative joint coordinates through the use of velocity transformation matrix. Design sensitivity analysis is carried out using the Direct Differentiation method applied to the relative joint coordinate formulation for spatial systems. Symbolic manipulation programs are used to develop subroutines which provide information for dynamic and design sensitivity analysis. These subroutines are linked to a general purpose computer program which performs dynamic analysis, design sensitivity analysis, and optimization. An example is presented to demonstrate the efficiency of the approach.

Virtual Prototype Modeling and Dynamics Analysis of a Large-Scale Wind Turbine’s Gearbox

2011 ◽  
Vol 314-316 ◽  
pp. 1043-1047
Author(s):  
Guo Yu Hu ◽  
Wen Lei Sun
Keyword(s):  
Optimal Design ◽  
Angular Velocity ◽  
Wind Turbine ◽  
Large Scale ◽  
Virtual Prototype ◽  
Design Parameters ◽  
Prototype Model ◽  
Flexible Body ◽  
Dynamics Analysis ◽  
Simulation Results

With the gearbox of a large-scale wind turbine as a study object, the virtual prototype model of gearbox is created based on UG and ADAMS softwares according to its design parameters such as structure and size. By rigid and flexible dynamics analysis for gearbox, the angular velocity and acceleration curves of the in-out shaft are obtained. Gear meshing forces and flexible body stress cloud using ADAMS are also obtained. It is verified that these results are coincided with the theoretical value through analysis and the simulation results of ADAMS are valid. The simulation results show that the design level of wind turbine gearboxes can be improved using the virtual prototype technology and lay a good foundation for further optimal design.

Reduced record method for efficient time history dynamic analysis and optimal design

2015 ◽  
Vol 8 (3) ◽  
pp. 639-663 ◽  
Author(s):  
A. Kaveh ◽  
A.A. Aghakouchak ◽  
P. Zakian
Keyword(s):  
Optimal Design ◽  
Dynamic Analysis ◽  
Time History

Dynamic Modeling and Simulation of a 4-Wheel Integral Steering Vehicle

2015 ◽  
Vol 811 ◽  
pp. 284-290
Author(s):  
Cătălin Alexandru
Keyword(s):  
Dynamic Analysis ◽  
Modeling And Simulation ◽  
Dynamic Modeling ◽  
Virtual Prototype ◽  
Steering System ◽  
Software Environment ◽  
Steering Law

The work deals with the dynamic modeling and simulation of a 4-wheel steering vehicle. The steering system for the front wheels is a classical one (with pinion & rack), while for the rear wheels, a new design with rotational cam & translational follower has been developed by considering the integral steering law. The virtual prototype of the vehicle was modeled - simulated by using the MBS software environment ADAMS of MSC. The results of the dynamic analysis prove the performance of the proposed solution, in terms of handling and stability.

Optimal Design of Semi-Trailer Frame Based on Topology Optimization

2012 ◽  
Vol 197 ◽  
pp. 502-507
Author(s):  
Li Li Dai ◽  
Jing Gang Wang ◽  
Shuang Zhao ◽  
Ya Qiong Deng ◽  
Nan Jia
Keyword(s):  
Topology Optimization ◽  
Optimal Design ◽  
Dynamic Analysis ◽  
Dynamic Characteristics ◽  
Frame Structure ◽  
Topological Optimization ◽  
Static Characteristics ◽  
Manufacturing Efficiency ◽  
Original Frame ◽  
The Cost

40t semi-trailer frame is optimized by usage of topological optimization and static/dynamic analysis technology. After the optimization, The static characteristics of frame completely satisfy requirement of intensity and stiffness, and the quality is reduced by 10% compared with the original frame. The dynamic characteristics of the new frame have been improved greatly, which indicate that the optimized frame structure is more reasonable, and lay the foundation for reducing the cost and improving manufacturing efficiency.

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