Test for Dynamic Stress and Strain

1993 ◽  
pp. 59-62
Author(s):  
W. Lemm
Keyword(s):  
Dynamic Stress ◽  
Stress And Strain

Dynamic Stress and Strain of HPC Under Drop-weight Impact Loading

2013 ◽  
Vol 65 (2) ◽  
Author(s):  
R. Hamid ◽  
Khairol Rizal Jamalluddin ◽  
Abu Sufian Md Zia Hasan
Keyword(s):  
Impact Loading ◽  
Dynamic Stress ◽  
Stress And Strain ◽  
Drop Weight ◽  
Weight Impact

Dynamic stress and strain

1996 ◽  
pp. 144-167 ◽  
Author(s):  
R. P. Brown
Keyword(s):  
Dynamic Stress ◽  
Stress And Strain

Griffith-II Type Crack Generation and Chip Formation Simulation in Vibration Turning Based on Prandtl-Reuss Flow Principle

2011 ◽  
Vol 201-203 ◽  
pp. 1699-1703
Author(s):  
Li Zhi Gu ◽  
Qi Hong ◽  
Bin Cheng
Keyword(s):  
Simulation Model ◽  
Stress Wave ◽  
Constitutive Relation ◽  
Chip Formation ◽  
Dynamic Stress ◽  
Shock Load ◽  
Stress And Strain ◽  
Crack Generation ◽  
Pile Up ◽  
Chip Separation

In order to profound the function of stress wave in vibration turning and present the effectiveness of instant change of stress and strain in the workpiece under the shock load,put forward a simulation model of materials obeying Prandtl-Reuss flow principle with non-linear constitutive relation for vibration turning with low frequency.Related techniques have been stressed on criterion of chip separation from the workpiece, friction between the chip and the rake of the tool. Results of simulation for both conventional and vibratory turning show that the dynamic stress intension factor is 1.45 times or more in vibratory turning than that in conventional turning. It is the stress wave that leads to the accumulation and concentration of stress, the dislocation pile-up, facilitating the chip generation and development.

scholarly journals A modified split Hopkinson torsional bar system for correlated study of τ – γ relations, shear localization and microstructural evolution

2014 ◽  
Vol 372 (2015) ◽  
pp. 20130208 ◽  
Author(s):  
Rong Yang ◽  
Husheng Zhang ◽  
Letian Shen ◽  
Yongbo Xu ◽  
Yilong Bai ◽  
...  
Keyword(s):  
Dynamic Stress ◽  
Shear Localization ◽  
Stress And Strain ◽  
Strain Response ◽  
Micro Structure ◽  
Paper Briefly ◽  
Effective Period ◽  
Split Hopkinson ◽  
Shear Stress And Strain ◽  
Set Up

The conventional split Hopkinson torsional bar (SHTB) system consists of two bars, which can successfully produce the data for the construction of dynamic torsional shear stress and strain relationships. However, the system cannot provide reliable information on the progression of the deformed micro-structure during the test. The reverberation of waves in the bars and the tested specimen can spoil the microstructural pattern formed during the effective loading. This paper briefly reviews a modified version of the SHTB system consisting of four bars that has been developed. This modified system can eliminate the reverberation of waves in the specimen and provide only a single rectangular torsional stress pulse, thus it can properly freeze the microstructure formed during the effective period of loading in the specimen. By using the advantage of the modified SHTB system, together with a new design of specimen, it is possible to perform a correlated study of the dynamic stress–strain response, shear localization and the evolution of the microstructure at a fixed view-field (position) on a given specimen during the sequence of the loading time. The principles, experimental set-up and procedure, calibration and some preliminary results of the correlated study are reported in this paper.

Dynamic Modeling and Durability Analysis from the Ground Up

2003 ◽  
Vol 46 (1) ◽  
pp. 128-134 ◽  
Author(s):  
Thomas Stadterman ◽  
William (Skip) Connon ◽  
Kyung Choi ◽  
Jeffrey Freeman ◽  
Alan Peltz
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Dynamic Modeling ◽  
Dynamic Stress ◽  
Stress And Strain ◽  
Integrated Process ◽  
Mechanical Reliability ◽  
Us Army ◽  
Element Modeling ◽  
Durability Analysis

Vehicle manufacturers currently use dynamic modeling, finite element modeling, and durability analysis to incorporate reliability into their designs. Although these models are often used separately, there has been little effort toward integrating these analyses and performing an analysis from the "ground up" (i.e., using terrain data to determine dynamic stress and strain). This paper outlines the approach of an ongoing analysis of a US Army trailer, using an integrated process of dynamic modeling, finite element modeling, and durability analysis. This project outlines an approach to mechanical reliability analysis that can be used early in design.

MEASUREMENT OF DYNAMIC STRESS AND STRAIN IN AND UNDER ROAD CONSTRUCTIONS

Strain ◽  
1969 ◽  
Vol 5 (4) ◽  
pp. 196-204
Author(s):  
J. F. POTTER ◽  
H. C. MAYHEW
Keyword(s):  
Dynamic Stress ◽  
Stress And Strain
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