Vibration Characteristic Prediction of a Heavy Machinery Suspension Seat Using Multi-Body Dynamic Analysis Method

This article proposes a novel simulation technique to predict the reasonable dynamic characteristics of a suspension seat for heavy machinery using a commercial multibody dynamic analysis code, ADAMS. The dynamic model is simulated with the specific condition such as sinusoidal and sweep input. The experiment test for actual suspension seat is conducted for reviewing the dynamic simulation model with same input condition. As the simulation results shows good agreements with experimental test results, the dynamic analysis model is reasonable and will be very helpful for predicting the dynamic characteristic for the suspension seat for heavy machinery and for designing the other type seats with the other suspension mechanism types.

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Performance Improvement in Steering Torque Simulator With Multibody Vehicle Model

Volume 7B: 9th International Conference on Multibody Systems, Nonlinear Dynamics, and Control ◽

10.1115/detc2013-12131 ◽

2013 ◽

Author(s):

Toshimasa Takouda ◽

Yoshinori Owaki ◽

Masashi Tsushima ◽

Taichi Shiiba

Keyword(s):

Dynamic Analysis ◽

Friction Model ◽

Experimental Result ◽

Vehicle Model ◽

Step Size ◽

Real Time Analysis ◽

Multibody Dynamic ◽

Multi Body ◽

Steering Torque ◽

Body Dynamic

The aim of this study is to improve the performance of a steering torque simulator with a multibody vehicle model. From the perspective of the calculation speed, the augmented formulation and the penalty method were investigated as the formulation of the multibody dynamic analysis. In this study, the step size of the real-time analysis was shortened by embedding matrix libraries to the multibody dynamic analysis. In addition, the friction characteristics of the steering rack of an actual vehicle was experimentally evaluated in order to enhance the reality of the developed simulator. The friction model was identified on the basis of the experimental result and was applied to the multi-body dynamic analysis. A slalom test was conducted with the developed simulator and was compared with the experiment of an actual vehicle.

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Continuous multi-body dynamic analysis of float-over deck installation with rapid load transfer technique in open waters

Ocean Engineering ◽

10.1016/j.oceaneng.2021.108729 ◽

2021 ◽

Vol 224 ◽

pp. 108729

Author(s):

Shujie Zhao ◽

Xun Meng ◽

Huajun Li ◽

Dejiang Li ◽

Qiang Fu

Keyword(s):

Dynamic Analysis ◽

Load Transfer ◽

Multi Body ◽

Body Dynamic

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Multi-body dynamic analysis of float-over installations

Ocean Engineering ◽

10.1016/j.oceaneng.2012.05.017 ◽

2012 ◽

Vol 51 ◽

pp. 1-15 ◽

Cited By ~ 19

Author(s):

L. Sun ◽

R. Eatock Taylor ◽

Y.S. Choo

Keyword(s):

Dynamic Analysis ◽

Multi Body ◽

Body Dynamic

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Modeling of Flexible Bodies for Dynamic Analysis of Multi-Body Dynamic Systems Using Ritz Vectors

17th Design Automation Conference: Volume 2 — Computer-Aided Design, Mechanical Systems Simulation, and Analysis, Mechanisms, and Robotics ◽

10.1115/detc1991-0146 ◽

1991 ◽

Author(s):

Henry T. Wu ◽

Neel K. Mani

Keyword(s):

Dynamic Analysis ◽

Mechanical Systems ◽

Normal Modes ◽

Flexible Bodies ◽

Static Correction ◽

Ritz Vectors ◽

Regeneration Procedure ◽

Efficient Vector ◽

Multi Body ◽

Body Dynamic

Abstract Vibration normal modes and static correction modes have been previously used to model flexible bodies for dynamic analysis of mechanical systems. The efficiency and accuracy of using these modes to model a system depends on both the flexibility of each body and the applied loads. This paper develops a generalized method for the generation of a set of Ritz vectors to model flexible bodies for dynamic analysis of multi-body mechanical systems. The Ritz vectors are generated using the distribution of dynamic loading on a flexible body. Therefore they form the most efficient vector basis for the spatial distribution of the loadings. The Ritz vectors can be re-generated when the system undergoes significant changes of its configuration and the regeneration procedure is inexpensive. The combinations of vibration normal modes and the proposed Ritz vectors thus form more efficient and accurate vector bases for the modeling of flexible bodies for dynamic analysis.

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