Debonding simulation of Fe-Ni interface with Pd interlayer and strength evaluation by atomic elastic stiffness coefficient

2020 ◽  
Vol 2020.69 (0) ◽  
pp. 111
Author(s):  
Kazuyasu NAKAMURA ◽  
Kisaragi YASHIRO ◽  
Keishi NAITO
Keyword(s):  
Elastic Stiffness ◽  
Stiffness Coefficient ◽  
Strength Evaluation

Estimation of the elastic stiffness coefficient c13 of fixed tendon and fixed myocardium

1995 ◽  
Vol 97 (5) ◽  
pp. 3171-3176 ◽  
Author(s):  
Brent K. Hoffmeister ◽  
Scott M. Handley ◽  
Edward D. Verdonk ◽  
Samuel A. Wickline ◽  
James G. Miller
Keyword(s):  
Elastic Stiffness ◽  
Stiffness Coefficient

Analysis of Micro Structure’s Elastic Stiffness

2012 ◽  
Vol 184-185 ◽  
pp. 890-895
Author(s):  
Li Shen ◽  
Shi Qiao Gao ◽  
An Ran Jiang ◽  
Cai Feng Wang
Keyword(s):  
Linear Relationship ◽  
Elastic Stiffness ◽  
Small Displacement ◽  
Stiffness Coefficient ◽  
Polynomial Fitting ◽  
Non Linear ◽  
Simulation Results ◽  
The Relationship

Based on the calculation and analysis of three kinds of elastic beam’s stiffness coefficient in micro machined gyroscope, the results show: in the condition of small displacement，forces and displacement are linear relationship in clamped-clamped beam, crab-foot beam and bow beam; but as the displacement increases, the relationship between forces and displacement are obvious non-linear in clamped-clamped beam. When the displacement is three times the length of beam’s width, the bow beam’s force and displacement are linear relationship. By ANSYS crab-foot beam and bow beam’s stiffness is obtained, the simulation results and the polynomial fitting coefficient are all credible.

Transverse Strength Evaluation of Light Cured Resin Impregnated Fiber Glass Reinforced Complete Denture

2018 ◽  
Vol 21 (5) ◽  
pp. 491-495
Author(s):  
Shady M. El-Naggar ◽  
Mohamed Seif El Nasr ◽  
Hassan Sakr
Keyword(s):  
Complete Denture ◽  
Fiber Glass ◽  
Strength Evaluation ◽  
Transverse Strength

Numerical and Experimental Research on the Fluid-Induced Forces of Clearance Flow in Canned Motor Reactor Coolant Pump

2019 ◽  
Vol 141 (6) ◽  
Author(s):  
Rui Xu ◽  
Yun Long ◽  
Yaoyu Hu ◽  
Junlian Yin ◽  
Dezhong Wang
Keyword(s):  
Large Mass ◽  
Stiffness Coefficient ◽  
Pressurized Water ◽  
Coolant Pump ◽  
Reactor Coolant ◽  
Various Boundary Conditions ◽  
Clearance Flow ◽  
Mass Coefficient ◽  
Cfd Method ◽  
Canned Motor

Reactor coolant pump (RCP) is one of the most important equipment of the coolant loop in a pressurized water reactor system. Its safety relies on the characteristics of the rotordynamic system. For a canned motor RCP, the liquid coolant fills up the clearance between the metal shields of the rotor and stator inside the canned motor, forming a long clearance flow. The fluid-induced forces of the clearance flow in canned motor RCP and their effects on the rotordynamic characteristics of the pump are numerically and experimentally analyzed in this work. A transient computational fluid dynamics (CFD) method has been used to investigate the fluid-induced force of the clearance. A vertical experiment rig has also been established for the purpose of measuring the fluid-induced forces. Fluid-induced forces of clearance flow with various whirl frequencies and various boundary conditions are obtained through the CFD method and the experiment. Results show that clearance flow brings large mass coefficient into the rotordynamic system and the direct stiffness coefficient is negative under the normal operating condition. The rotordynamic stability of canned motor RCP does not deteriorate despite the existence of significant cross-coupled stiffness coefficient from the fluid-induced forces of the clearance flow.

scholarly journals Sensitivity Based Selection of an Optimal Cable-Driven Parallel Robot Design for Rehabilitation Purposes

Robotics ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 7
Author(s):  
Ferdaws Ennaiem ◽  
Abdelbadiâ Chaker ◽  
Juan Sebastián Sandoval Arévalo ◽  
Med Amine Laribi ◽  
Sami Bennour ◽  
...  
Keyword(s):  
Pareto Front ◽  
Parallel Robot ◽  
Elastic Stiffness ◽  
Upper Limb Rehabilitation ◽  
Daily Life Activities ◽  
System A ◽  
The Monte Carlo Method ◽  
Genetic Algorithm Method ◽  
Limb Rehabilitation ◽  
Selection Of

This paper deals with the design of an optimal cable-driven parallel robot (CDPR) for upper limb rehabilitation. The robot’s prescribed workspace is identified with the help of an occupational therapist based on three selected daily life activities, which are tracked using a Qualisys motion capture system. A preliminary architecture of the robot is proposed based on the analysis of the tracked trajectories of all the activities. A multi-objective optimization process using the genetic algorithm method is then performed, where the cable tensions and the robot size are selected as the objective functions to be minimized. The cables tensions are bounded between two limits, where the lower limit ensures a positive tension in the cables at all times and the upper limit represents the maximum torque of the motor. A sensitivity analysis is then performed using the Monte Carlo method to yield the optimal design selected out of the non-dominated solutions, forming the obtained Pareto front. The robot with the highest robustness toward the disturbances is identified, and its dexterity and elastic stiffness are calculated to investigate its performance.

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