Holographic Interferometry in Automotive Powertrain Component Engineering Analysis

1995 ◽  
Author(s):  
James W. Forbes ◽  
Mitchell M. Marchi ◽  
Alexander Petniunas ◽  
Raymond R. Wales
Keyword(s):  
Dynamic Response ◽  
Holographic Interferometry ◽  
Structural Integrity ◽  
Engineering Analysis ◽  
Design Requirement ◽  
Noise And Vibration ◽  
Vehicle System ◽  
System Components ◽  
Automotive Powertrain ◽  
System Requirements

Abstract As increased performance and vehicle system requirements are placed on automotive powertrains more sophisticated methods of engineering analysis are required in their development. Since the containment of noise and vibration is a major design requirement for powertrains, experimental techniques such as laser holographic interferometry are used to tune the dynamic response of system components. This allows the overall system to be optimized from a noise and vibration standpoint as well as from the standpoint of structural integrity. This paper will discuss a variety of examples of how powertrain components have been optimized with the use of holographic methodology.

DYNAMIC RESPONSE OF TIMBER BRIDGES AS A TOOL TO MEASURE STRUCTURAL INTEGRITY

2003 ◽  
Vol 27 (3) ◽  
pp. 25-28
Author(s):  
A.M. Morison ◽  
C.D. Karsen ◽  
H.A. Evensen ◽  
J.B. Ligon
Keyword(s):  
Dynamic Response ◽  
Structural Integrity ◽  
Timber Bridges

Study on Electro-Pneumatic Clutch for Automatic Mechanical Transmission

2011 ◽  
Vol 148-149 ◽  
pp. 1149-1153
Author(s):  
Wu Chao Zhang ◽  
Yong Zhai
Keyword(s):  
Diesel Engine ◽  
Field Experiment ◽  
Control Strategy ◽  
Engine Speed ◽  
Mechanical Transmission ◽  
Control Law ◽  
Clutch Engagement ◽  
Automotive Powertrain ◽  
System Requirements ◽  
Clutch Control

The clutch control is one of the cores and most difficult issues in the development of an AMT system. In this paper the pneumatic clutch engagement characteristic is analyzed. Thereto, a simulation model of an automotive powertrain comprises a diesel engine, drivetrain and wheels driving a vehicle through tire-road adhesion are built using Matlab/Simulink. In the simulation, a refined control law of constant engine speed in part process is proposed and tested. The engaging speed and displacement of the clutch vary with the accelerate paddle opening, engine speed, clutch driven plate speed and gears according the control law. Field experiment results show that the control strategy fulfills the system requirements.

Measurement and Interpretation of Driver/Vehicle System Dynamic Response

1973 ◽  
Vol 15 (4) ◽  
pp. 367-378 ◽  
Author(s):  
David H. Weir ◽  
Duane T. McRuer
Keyword(s):  
Dynamic Response ◽  
Real World ◽  
Experimental Verification ◽  
Closed Loop ◽  
Lateral Position ◽  
Visual Simulation ◽  
Simulation Experiments ◽  
Describing Functions ◽  
Vehicle System ◽  
Directional Control

This paper summarizes applicable theory and data from simulation experiments on the directional control of automobiles subjected to crosswind gust disturbances. Measured driver/vehicle describing functions for several subjects and replications are presented and interpreted. It is shown that the driver's steering outputs can be explained as functions of lateral position and heading, although alternate interpretations involving path-angle and path-rate feedbacks are considered. The results demonstrate that driver/vehicle response properties can be modeled and measured for a class of important closed-loop driving tasks. They provide further direct experimental verification of the applicability of driver/vehicle theory to situations where the driver obtains his information from a real-world visual simulation.

Dynamic Response Analysis of Control Rod Drive Mechanism Under the Stepping Impact Force for Nuclear Power Plants

2012 ◽  
Author(s):  
Xiaoyao Shen ◽  
Yongcheng Xie
Keyword(s):  
Dynamic Response ◽  
Nuclear Power ◽  
Power Plants ◽  
Structural Integrity ◽  
Impact Force ◽  
Response Analysis ◽  
Control Rod ◽  
Drive Mechanism ◽  
Finite Element Software ◽  
The Impact

The control rod drive mechanism (CRDM) is an important safety-related component in the nuclear power plant (NPP). When CRDM steps upward or downward, the pressure-containing housing of CRDM is shocked axially by an impact force from the engagement of the magnetic pole and the armature. To ensure the structural integrity of the primary coolant loop and the functionality of CRDM, dynamic response of CRDM under the impact force should be studied. In this manuscript, the commercial finite element software ANSYS is chosen to analyze the nonlinear impact problem. A nonlinear model is setup in ANSYS, including main CRDM parts such as the control rod, poles and armatures, as well as nonlinear gaps. The transient analysis method is adopted to calculate CRDM dynamic response when it steps upward. The impact loads and displacements at typical CRDM locations are successfully obtained, which are essential for design and stress analysis of CRDM.

The Planning of Maintenance Support Capabilities of the Wartime Armored Equipment Autonomic Logistic System Based on QFD

2013 ◽  
Vol 760-762 ◽  
pp. 1221-1226
Author(s):  
Wei Long Chen ◽  
Chun Liang Chen ◽  
Wen Hua Shi
Keyword(s):  
Condition Monitoring ◽  
Influence Factors ◽  
Development Planning ◽  
System Structure ◽  
Development Model ◽  
Information Support ◽  
System Components ◽  
System Requirements ◽  
Quality Function Development ◽  
Main Influence

In order to solve the problem of lacking development planning and unclear key development point for the wartime armored equipment autonomic logistic system, components, system structure, system requirements and competence objectives of the system is analyzed. A Quality Function Development model of the planning of maintenance support capability is put forward and solved. The result shows that information support capability, condition monitoring capability and reasoning capability are main influence factors of maintenance support capability of the wartime armored equipment autonomic logistic system.

The estimate of dynamic response of spacecraft and launcher fragmentation system components under impulsive loading

2015 ◽  
Vol 21 (1(92)) ◽  
pp. 15-19 ◽  
Author(s):  
M.G. Shulzhenko ◽  
◽  
B.P. Zajtsev ◽  
P.P. Gontarovskyi ◽  
T.V. Protasova ◽  
...  
Keyword(s):  
Dynamic Response ◽  
Impulsive Loading ◽  
System Components
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