Rate dependent behavior of crash-optimized adhesives – Experimental characterization, model development, and simulation

2015 ◽  
Vol 133 ◽  
pp. 112-137 ◽  
Author(s):  
Michael May ◽  
Olaf Hesebeck ◽  
Stephan Marzi ◽  
Wolfgang Böhme ◽  
Jörg Lienhard ◽  
...  
Keyword(s):  
Model Development ◽  
Experimental Characterization ◽  
Rate Dependent ◽  
Dependent Behavior ◽  
Characterization Model

Model Development for PZT Bimorph Actuation Employed for Micro-Air Vehicles

2016 ◽  
Author(s):  
John Crews ◽  
Nikolas Bravo ◽  
Ralph Smith
Keyword(s):  
Model Development ◽  
Micro Air Vehicles ◽  
Energy Model ◽  
Comprehensive Model ◽  
Actuator Dynamics ◽  
Rate Dependent ◽  
Dependent Behavior ◽  
Bimorph Actuators ◽  
Homogenized Energy Model ◽  
Air Vehicles

In the paper, we discuss the development of a model for PZT bimorph actuators used to power micro-air vehicles including Robobee. Due to highly dynamic drive regimes required for the actuators, models must quantify the nonlinear, hysteretic, and rate-dependent behavior inherent to PZT in these regimes. We employ the homogenized energy model (HEM) framework to model the actuator dynamics and numerically we illustrate the capability of the model to characterize the inherent hysteresis. This provides a comprehensive model, which can be inverted and implemented for certain control regimes.

Dynamic evolution of shear rate-dependent behavior of rock discontinuity under shearing condition

2021 ◽  
Vol 28 (6) ◽  
pp. 1875-1887
Author(s):  
Lin-lin Gu ◽  
Zhen Wang ◽  
Feng Zhang ◽  
Fei Gao ◽  
Xiao Wang
Keyword(s):  
Shear Rate ◽  
Dynamic Evolution ◽  
Rock Discontinuity ◽  
Rate Dependent ◽  
Dependent Behavior

Three-dimensional constitutive model for shape-memory polymers considering temperature-rate dependent behavior

2021 ◽  
Vol 30 (3) ◽  
pp. 035030
Author(s):  
Jinsu Kim ◽  
Seung-Yeol Jeon ◽  
Seokbin Hong ◽  
Yongsan An ◽  
Haedong Park ◽  
...  
Keyword(s):  
Constitutive Model ◽  
Shape Memory ◽  
Three Dimensional ◽  
Shape Memory Polymers ◽  
Rate Dependent ◽  
Dependent Behavior ◽  
Temperature Rate
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