Viscosity Calculations on the Basis of Eyring's Absolute Reaction Rate Theory and COSMOSPACE

2005 ◽  
Vol 44 (22) ◽  
pp. 8428-8435 ◽  
Author(s):  
Dennis Bosse ◽  
Hans-Jörg Bart
Keyword(s):  
Reaction Rate ◽  
Rate Theory ◽  
Absolute Reaction Rate Theory ◽  
Reaction Rate Theory ◽  
Absolute Reaction Rate ◽  
Absolute Reaction

scholarly journals A Unified Constitutive Model for Creep and Cyclic Viscoplasticity Behavior Simulation of Steels Based on the Absolute Reaction Rate Theory

2017 ◽  
Vol 2017 ◽  
pp. 1-13
Author(s):  
Huayan Chen ◽  
Xiangguo Zeng ◽  
Yang Guo ◽  
Fang Wang
Keyword(s):  
Constitutive Model ◽  
Reaction Rate ◽  
Internal State ◽  
Rate Theory ◽  
State Variables ◽  
Absolute Reaction Rate Theory ◽  
Reaction Rate Theory ◽  
Absolute Reaction Rate ◽  
The Absolute ◽  
Absolute Reaction

In this work, the viscoplasticity and creep behavior for modified 9Cr-1Mo and 316 stainless steels were investigated. Based on the absolute reaction rate theory, a unified constitutive model incorporating internal state variables was proposed to characterize the evolution of the back stress. Also, the model was implemented by the ABAQUS system with the semi-implicit stress integration. Compared to the experimental data, the results demonstrated that the proposed approach could effectively simulate the cyclic softening and hardening behavior for such structural steels.

TEMPERATURE INDEPENDENT FACTORS OF HYDROGEN ABSTRACTION REACTIONS IN THE GAS PHASE

1952 ◽  
Vol 30 (10) ◽  
pp. 773-778 ◽  
Author(s):  
S. Bywater ◽  
R. Roberts
Keyword(s):  
Gas Phase ◽  
Reasonable Agreement ◽  
Reaction Rate ◽  
Hydrogen Abstraction ◽  
Rate Theory ◽  
Absolute Reaction Rate Theory ◽  
Reaction Rate Theory ◽  
Absolute Reaction Rate ◽  
Experimental Values ◽  
Absolute Reaction

Temperature independent factors for a series of hydrogen abstraction reactions in the gas phase have been calculated using the absolute reaction rate theory of Eyring and co-workers. The calculated values have been compared with experimental values wherever possible. Reasonable agreement is obtained. The factors producing variations have been examined and the sources of error in this type of calculation are discussed.

Sign in / Sign up

Export Citation Format

Share Document