Experiences with dynamic load simulation by means of modal forces in the presence of structural non-linearities

2006 ◽  
Vol 10 (5) ◽  
pp. 411-419 ◽  
Author(s):  
Dennis Göge ◽  
J. Michael Sinapius
Keyword(s):  
Dynamic Load ◽  
Load Simulation

scholarly journals A Computer Program for Dynamic Load Simulation of Spur Gears with Asymmetric and Symmetric Teeth

2012 ◽  
Vol 02 (05) ◽  
pp. 239-245
Author(s):  
Fatih Karpat ◽  
Stephen Ekwaro-Osire ◽  
Esin Karpat
Keyword(s):  
Computer Program ◽  
Dynamic Load ◽  
Spur Gears ◽  
Load Simulation

Modeling and Simulation of Disc Brake Resistance Load in Low Speed Condition

2012 ◽  
Vol 548 ◽  
pp. 691-695
Author(s):  
Yi He ◽  
Shao Jie Du ◽  
Guang Wei Cheng
Keyword(s):  
Dynamic Load ◽  
Response Speed ◽  
Input Voltage ◽  
Fast Response ◽  
Test System ◽  
Disc Brake ◽  
Tracked Vehicle ◽  
Low Speed ◽  
Braking Torque ◽  
Load Simulation

In this paper, the load simulation of tracked vehicle disc brake in low speed is discussed. The simulation of the resistance load and the control of the disc brake is researched when the resistance load loading on the test bench The simulation results show that, by controlling the input voltage of the disc brake electrohydraulic control portion, the disc brake braking torque can be controlled, the driving resistance simulation of crawler vehicle is realized. At the same time, the simulation has high accuracy, fast response speed, and has better dynamic characteristic. When the tracked vehicle is at the process of start, acceleration, deceleration, braking, steering , the engine and the transmission system mainly are in an unstable vehicle system dynamic, the load is dynamic load must be given. In order to investigate the performance of tracked vehicle HMCVT, a dynamic load [1] in the test system to simulate the loading process of tracked vehicle. Eddy current dynamometer can simulate the load [2,3] during a vehicle running a higher speed , the driving load in low speed ( including zero speed ) is simulated by disc brakes .

scholarly journals Dynamic load simulation of the machine nodes containing interacting rollers

2021 ◽  
Vol 7 (2) ◽  
pp. 153-159
Author(s):  
D.I. Perminova ◽  
Keyword(s):  
Contact Problem ◽  
Dynamic Model ◽  
Dynamic Load ◽  
Dynamic Loads ◽  
Interaction Forces ◽  
Direct Modeling ◽  
Pressure Changes ◽  
Load Simulation

The article presents a dynamic model of interaction of rollers on the example of printing cylinders of an offset machine. Based on the solution of the contact problem, the interaction forces of the cylinders are determined, direct modeling of dynamic loads and vibrations is carried out, the amplitudes of vibrations and pressure changes are determined. Options for reducing loads are considered. The disadvantages of existing models of printing machines are analyzed and taken into account.

A Study on the Dynamic Load Simulation for a Crawler Excavator Considering Ground Effect

2012 ◽  
Author(s):  
Seongpil Yang ◽  
Mooseung Kim ◽  
Donghyeon Hwang ◽  
Panyoung Kim
Keyword(s):  
Fatigue Life ◽  
Dynamic Load ◽  
Ground Effect ◽  
Fatigue Load ◽  
Track System ◽  
Multibody Dynamic ◽  
Reaction Forces ◽  
Fatigue Loads ◽  
Load Simulation ◽  
Design Factors

A fatigue life is one of the key design factors for crawler excavators because they are usually operated in a very harsh working condition. In order to evaluate the fatigue life, the fatigue loads in various working conditions should be decided in advance. In case of the attachments such as boom and arm, the forces at the bucket tip due to digging and lifting are primary fatigue loads, which can be calculated relatively easily using design specifications. However, the forces at the track need to be considered additionally for the upper and lower frames. And it is almost impossible to measure the forces at track in a field test. In this study, a dynamic model of excavator including track system is implemented and dynamic load simulations are carried out to investigate the distribution of the reaction forces at each roller for the typical working scenarios. The model and the simulation technique are verified by comparison with the results of measurement in view of weight balance, cylinder forces, accelerations of counter weight and stresses at concerned points. The normalized distribution of the reaction forces at each roller in digging and lifting working mode are presented and the distribution is expected to be used as the baseline of fatigue load estimation for the upper and lower frames of various class crawler excavators. To get the multibody dynamic simulation results by the excavator motion, we used the commercial software such as Recurdyn for kinematic and dynamic modeling. Especially the track modeling of the excavator is composed using Track_LM module of the Recurdyn. And stress analysis of the frame is carried out using the NX-Nastran program.

The Efficiency and Experimental Investigation of Differential Gear Train

2011 ◽  
Vol 308-310 ◽  
pp. 1893-1899 ◽  
Author(s):  
Chun Guo Zhou ◽  
Hui Wu Wang ◽  
Chao Feng Ma ◽  
Yan Guo
Keyword(s):  
Experimental Investigation ◽  
Structure Analysis ◽  
Test Data ◽  
Dynamic Load ◽  
Test Bench ◽  
Gear Train ◽  
Test Results ◽  
Experimental Identification ◽  
Differential Gear ◽  
Load Simulation

According to derive the efficiency formula of 2K-H differential gear train, the direction of meshing power has been determined. The test bench of fear train combination and structure analysis has been used to experimentation. The test results of various rotational speeds and torques have been collected by the dynamic load simulation loading. Through analyzing the test data, the efficiency formula of differential gear and its relationship with the dynamic load have been demonstrated. The results of experiment have been provided to experimental identification for the theories research

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