ON A STUDY OF THE (A_T)c AND C* INTEGRALS FOR FRACTURE ANALYSIS UNDER NON-STEADY CREEPt
نویسنده
چکیده
Abstract-The validity of the parameter (AT), (which was previously introduced by one of the authors), its meaning, and its calculation, in the analysis of cracked bodies under non-steady creep conditions, are studied. Comparisons are made with the widely used parameter C*, which is valid for steady-state creep. An efficient finite element method for general, small-strain, elasticlviscoplastic analyses is described and the results of an example calculation for a standard compact specimen are presented and discussed.
منابع مشابه
Experimental Study and steady state stability analysis of CLL-T Series Parallel Resonant Converter with Fuzzy controller using State Space Analysis
This paper presents a Closed Loop CLL-T (capacitor inductor inductor) Series Parallel Resonant Converter (SPRC) has been simulated and the performance is analysised. A three element CLL-T SPRC working under load independent operation (voltage type and current type load) is presented in this paper. The Steady state Stability Analysis of CLL-T SPRC has been developed using State Space technique a...
متن کاملبررسی تاثیر ناندرولون، کلسیم و ویتامین C بر روند جوش خوردگی شکستگی استخوان تیبیا
Background and Objective: Delayed :::::::::union::::::::: and non:::::::::union::::::::: account for the most common complications of fractures of extremities in human. There are several factors influencing normal process of bone :::::::::union::::::::: among which nutrition is of extreme importance. The objective of this study was to assess the effect of nandrolone, calcium-D and vitamin C on ...
متن کاملThe Effect of Coking on Kinetics of HDS Reaction under Steady and Transient States
A study was made of the coking of a commercial fresh sulfide Ni-Mo/Al2O3 catalyst in a fixed-bed reactor. The catalyst was coked using different coke precursors in the gas oil under accelerated conditions at temperatures of 400 to 450°C to yield different deactivated catalysts containing 2-20 wt% C. Two cases were studied; crushed catalyst without diffusional ...
متن کاملFracture Toughness سطح اتصال رزین کامپوزیتی و سرامیک
Statement of Problem: In a previous study it was reported that a durable resin-ceramic tensile bond could be obtained by an appropriate silane application without the need for HF acid etching the ceramic surface. Evaluation of the appropriate application of silane by other test methods seems to be necessary. Purpose: The purpose of this study was to compare the interfacial fracture toughness of...
متن کاملEffects of temperature and confining pressure on mode II fracture toughness of rocks (Case study: Lushan Sandstone)
The fracture mechanics examines the development and expansion of cracks in solids and how they affect the deformation of materials. The stress intensity factors at the tip of the crack and the critical stress intensity factors or fracture toughness of materials are considered in the relevant criteria. There are three main modes of applying forces to a crack including the tensile mode, shear mod...
متن کامل