Modeling and dynamic simulation of novel dual-wave shock test machine

2011 ◽  
Author(s):  
Wen Zhaodong ◽  
Wang Yu ◽  
Zhang Lei ◽  
Du Jianye
Keyword(s):  
Dynamic Simulation ◽  
Test Machine ◽  
Shock Test ◽  
Shock Test Machine

Design and Control of a High Velocity, High Force Hydraulic Shock Test Machine

1986 ◽  
Vol 29 (2) ◽  
pp. 54-57
Author(s):  
John Favour
Keyword(s):  
System Performance ◽  
System Response ◽  
Test Machine ◽  
Testing Device ◽  
Concept Design ◽  
Hydraulic Shock ◽  
Shock Test ◽  
Shock Testing ◽  
Shock Test Machine ◽  
And Control

This paper discusses the design and control of a large hydraulic shock testing device. The system is capable of peak velocities up to 10.2 m/s (400 in/sec) and peak forces up to 801 kN (180,000 lbs). The major challenges discussed are: 1) the concept design, 2) the specification and procurement of two very large (2500 gpm) electro-hydraulic servovalves and 3) the failsafe control of the servovalves and system response. The system performance is briefly discussed.

Chirp Shock Test Machine: A Laboratory-Based Shock Test Tool

2006 ◽  
Author(s):  
Marlin E. Keefer ◽  
Terrence J. Wilke ◽  
Alfred A. Jagaczewski ◽  
Paul M. Wells ◽  
Patricia F. Hnat
Keyword(s):  
Test Machine ◽  
Shock Test ◽  
Test Tool ◽  
Shock Test Machine

Simulation and Design of High-Speed Hydraulic Velocity Generator in Shock Test Machine

2014 ◽  
Vol 38 (6) ◽  
pp. 663-668
Author(s):  
Tae Hyeong Kim ◽  
Chang Won Shul ◽  
Yoon Jae Kim ◽  
Myung Seog Yang ◽  
Gyu Sub Lee
Keyword(s):  
High Speed ◽  
Test Machine ◽  
Shock Test ◽  
Shock Test Machine

scholarly journals Study on a Nonlinear Dynamic Model and Its Parameters Determination Method for Half-Sine Programmer

2019 ◽  
Vol 37 (6) ◽  
pp. 1085-1094
Author(s):  
Dedong Huang ◽  
Jingjing Wen ◽  
Liangliang Xing ◽  
Guoning Wei ◽  
Bin Wu
Keyword(s):  
Dynamic Model ◽  
Nonlinear Dynamic ◽  
Present Model ◽  
Test Machine ◽  
Prediction Errors ◽  
Shock Pulse ◽  
Nonlinear Dynamic Model ◽  
Shock Test ◽  
Quantum Genetic Algorithm ◽  
Shock Test Machine

A nonlinear dynamic model for describing shock response of half-sine programmer in shock test is constructed, in which many important factors in half-sine programmer such as size, hard nonlinearity, damping and initial impact velocity are considered, based on the damped Duffing equation, and the empirical static stiffness and shock stiffness calculation formulas of cylindrical rubber isolator. The shock pulse of half-sine programmer is measured and calculated by using shock test machine and Runge-Kutta method. Taking the minimum determination coefficient between the calculated and the measured shock pulse as the optimization objective, the parameters in the present model are determined by using quantum genetic algorithm (QGA), and meanwhile the extreme capacity in the present model for describing the dynamic behavior of half-sine programmer under shock excitations can also be verified. Experiments were implemented with drop shock test machine. The experimental results show that the present model is precise and efficient, and the prediction errors of pulse peaks and pulse widths were all below 5%, the waveform fitting errors between the calculated and the measured pulses are all less than 15%. The present results are helpful for designing the half-sine programmer.

Shock wave characteristics of a hydraulic damper for shock test machine

2010 ◽  
Vol 24 (5) ◽  
pp. 1570-1578 ◽  
Author(s):  
Sujuan Jiao ◽  
Yu Wang ◽  
Lei Zhang ◽  
Hongxing Hua
Keyword(s):  
Shock Wave ◽  
Test Machine ◽  
Shock Test ◽  
Hydraulic Damper ◽  
Wave Characteristics ◽  
Shock Test Machine
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