Dynamic Mechanical Response and Movement Evolution Characteristics of Fault Systems in the Coal Mining Process

2021 ◽  
Author(s):  
Jinhai Zhao ◽  
Chen Juntao ◽  
Xing Huilin ◽  
Zhihao Zhao ◽  
Zhang Xinguo
Keyword(s):  
Coal Mining ◽  
Mechanical Response ◽  
Dynamic Mechanical ◽  
Fault Systems ◽  
Evolution Characteristics

scholarly journals Tuning of Static and Dynamic Mechanical Response of LPBFed AlSi10Mg Lattice Structures through heat Treatments

2021 ◽  
Author(s):  
Jacopo Fiocchi ◽  
Chiara Bregoli ◽  
Giulio Gerosa ◽  
Ausonio Tuissi ◽  
Carlo Alberto Biffi
Keyword(s):  
Mechanical Response ◽  
Heat Treatments ◽  
Lattice Structures ◽  
Dynamic Mechanical

An investigation of the dynamic mechanical response of healing cortical bone

1994 ◽  
Vol 27 (6) ◽  
pp. 826
Author(s):  
C.A. Brown ◽  
H.C. Ward ◽  
C.F. Abrams ◽  
S.C. Roe ◽  
D.J. Deyoung ◽  
...  
Keyword(s):  
Cortical Bone ◽  
Mechanical Response ◽  
Dynamic Mechanical

Cure and Dynamic-Mechanical Behaviors of Vinyl Ester Resinfilled with Multi-Walled Carbon Nanotubes

2010 ◽  
Vol 150-151 ◽  
pp. 1413-1416 ◽  
Author(s):  
Hong Yan Chen ◽  
Zhen Xing Kong ◽  
Ji Hui Wang
Keyword(s):  
Carbon Nanotubes ◽  
Vinyl Ester ◽  
Mechanical Response ◽  
Cure Kinetics ◽  
Crosslinking Density ◽  
Vinyl Ester Resin ◽  
Scanning Calorimetry ◽  
Dynamic Mechanical ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

The cure kinetics of Derakane 411-350, a kind of vinyl ester resin, and its suspensions containing multi-walled carbon nanotubes( MWCNTs) were investigated via non-isothermal dynamic scanning calorimetry (DSC) measurements. The results showed that incorporation of MWCNTs into vinyl ester resin excessively reduces polymerization degree and crosslinking density of vinyl ester resin. For suppressing the negative effect caused by nanotubes, the higher temperature initiator combined with the initiator MEKP was used. Dynamic-mechanical Behavior testing was then carried out on the cured sample in order to relate the curing behavior of MWCNTs modified resin suspensions to mechanical response of their resulting nanocomposites. It was revealed that nanocomposites containing MWCNTs possessed larger storage modulus values as well as higher glass transition temperatures (Tg) as compared to those without MWCNTs after using mixed intiators system to improve the degree of cure.

Dynamic Mechanical Response Validation of Pavement Structural under Complex Stress State

2010 ◽  
Vol 163-167 ◽  
pp. 1645-1650
Author(s):  
Guo Ping Qian ◽  
Shuai Li ◽  
Li Jun Jiang
Keyword(s):  
Stress State ◽  
Model Calculation ◽  
Mechanical Response ◽  
Structural Response ◽  
Complex Stress ◽  
Calculation Model ◽  
Dynamic Strain ◽  
Response Model ◽  
Dynamic Mechanical ◽  
Pavement Structure

Under the heavy traffic, the stress state of asphalt pavement structure has such a complex change that it is difficult for conventional pavement structural response calculation model to deal with. Therefore, "Pavement structure dynamic mechanical response model under complex stress condition" is established in this paper. Kinds of cases are calculated according to the characteristics of heavy vehicle. Then the FWD deflection test and dynamic strain test are carried out. Finally, the rationality of pavement structural response model calculation model is proved by comparing the test results with the theoretical model calculation results.

Strain rate dependent dynamic mechanical response of bainitic multiphase steels

2019 ◽  
Vol 745 ◽  
pp. 279-290 ◽  
Author(s):  
Behnam Shakerifard ◽  
Jesus Galan Lopez ◽  
Mari Carmen Taboada Legaza ◽  
Patricia Verleysen ◽  
Leo A.I. Kestens
Keyword(s):  
Strain Rate ◽  
Mechanical Response ◽  
Dynamic Mechanical ◽  
Rate Dependent ◽  
Multiphase Steels

scholarly journals Role of smooth muscle activation in the static and dynamic mechanical characterization of human aortas

2022 ◽  
Vol 119 (3) ◽  
pp. e2117232119
Author(s):  
Giulio Franchini ◽  
Ivan D. Breslavsky ◽  
Francesco Giovanniello ◽  
Ali Kassab ◽  
Gerhard A. Holzapfel ◽  
...  
Keyword(s):  
Experimental Data ◽  
Smooth Muscle ◽  
Muscle Activation ◽  
Mechanical Response ◽  
Mechanical Characterization ◽  
Viscoelastic Behavior ◽  
Material Model ◽  
Suitable Material ◽  
Dynamic Mechanical

Experimental data and a suitable material model for human aortas with smooth muscle activation are not available in the literature despite the need for developing advanced grafts; the present study closes this gap. Mechanical characterization of human descending thoracic aortas was performed with and without vascular smooth muscle (VSM) activation. Specimens were taken from 13 heart-beating donors. The aortic segments were cooled in Belzer UW solution during transport and tested within a few hours after explantation. VSM activation was achieved through the use of potassium depolarization and noradrenaline as vasoactive agents. In addition to isometric activation experiments, the quasistatic passive and active stress–strain curves were obtained for circumferential and longitudinal strips of the aortic material. This characterization made it possible to create an original mechanical model of the active aortic material that accurately fits the experimental data. The dynamic mechanical characterization was executed using cyclic strain at different frequencies of physiological interest. An initial prestretch, which corresponded to the physiological conditions, was applied before cyclic loading. Dynamic tests made it possible to identify the differences in the viscoelastic behavior of the passive and active tissue. This work illustrates the importance of VSM activation for the static and dynamic mechanical response of human aortas. Most importantly, this study provides material data and a material model for the development of a future generation of active aortic grafts that mimic natural behavior and help regulate blood pressure.

Testing and Modeling of Mechanical Parameters in Resistance Welding Machines

2013 ◽  
Vol 712-715 ◽  
pp. 1235-1240
Author(s):  
Pei Wu ◽  
Yong An Zhang ◽  
Chuan Zhong Xuan ◽  
Yan Hua Ma
Keyword(s):  
Mechanical Response ◽  
Resistance Welding ◽  
Work Piece ◽  
Mechanical Parameters ◽  
Test Set ◽  
Dynamic Mechanical ◽  
Projection Welding ◽  
Welding Machine ◽  
Equivalent Mass ◽  
Set Up

The dynamic mechanical responses of resistance welding machine,which is mainly governed by the mechanical parameters of the machine, is very important to the weld quality especially in projection welding when collapse or deformation of work piece occurs. In this paper, a mathematical model for characterizing the dynamic mechanical response of resistance welding machine and a special test set-up called breaking test set-up have been developed. Based on the model and the test results, the mechanical parameters of the machine were identified, including the equivalent mass, the damping coefficient, and the stiffness for both electrode systems.

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