The results showed when the alternating loads were 80% and 60% of the damaging loads, the fracture curves of fatigue/creep had three stages, namely, transient elastic deformation stage, delayed elastic deformation stage and accelerated fracture stage;

The sequence of the relating degree between parameter A and others are B>D>C. The relation between instantaneous elastic and delayed elastic deformation is compact.

The shortness of creep loading time and the faster frequency of fatigue load change induce general elastic strain stage to end and delayed elastic strain platform stage to begin under shorter strain.

At the same load,P masoniana was stronger than E urophylla × camaldulensis in resistant to instantaneous elastic deformation,long term viscous creep and delayed elastic creep.

ANALYSIS 0F DEFORMATION AND STRESS REDISTRIBUTION OF CONTINUOUS STRUCTURE DUE T0 CREEP 0F C0NCRETE——Taking account of loading at different age and delayed elasticity of concrete——

Various properties of materials, such as instantaneous elasticity, delayed elasticity, viscous flow and plasticity, etc. , can be described satisfactoriy by this new model theory.

In the practical application of the Real Options method in ship investment in this article, I classified the diversified managerial flexibilities into several categories, and discussed three of them (lay-up flexibility > quit flexibility and postponement flexibility) chapter by chapter, established the frameworks and price models for corresponding real options(annual operating option > abandonment option and waiting option),and computed the value of real option in the given examples.

It is shown that:(a) The energy release rates of viscoelastic cracked bodies may be divided into two parts. One describes the effect of retarded elasticity, another part describes the effect of viscous flow;

The PF resins with a high pH have great potential to develop delayed elastic creep.

The combined static torsion and extension experiments are used to determine the basic delayed elastic response functions.

Apparent plastic extensibility turned out as delayed elastic extensibility, that is, CM showed visco-elastic behavior, if the system had sufficient time (up to 24 h) for relaxation.

The results demonstrate that, in the stress and temperature ranges studied, Se exhibits three types of strain-time responses: elastic, delayed elastic, and viscous flow.

The relaxation of delayed elastic strain shows exponential behavior with a single relaxation time.

The delayed elasticity effects following load-removal were also analysed, and reproduced by means of a proper phenomenological law that allowed to complete the global creep model proposed in previous works.

Intercrystalline cracking, grain-boundary sliding, and delayed elasticity at high temperatures

The hypothesis of an interrelation between grain-boundary sliding and delayed elasticity in polycrystalline materials at high homologous temperatures is used to investigate the conditions conducive to microcracking.

Intercrystalline cracking, grain-boundary sliding, and delayed elasticity at high temperatures

The hypothesis of an interrelation between grain-boundary sliding and delayed elasticity in polycrystalline materials at high homologous temperatures is used to investigate the conditions conducive to microcracking.

In this paper we, using the viscoelastic, correspondence principle. consider the energy fracture criteria for a variety of linear viscoelastic solids. This principle arises because of the similarity which exists between the governing viscoelastic equations after Laplace transforms with respect to time and the corresponding untransformed elastic equations. We may therefore use this correspondence to write down immediately the Laplace transforms of the associated viscoelastic expressions. By inverting these transformed...

In this paper we, using the viscoelastic, correspondence principle. consider the energy fracture criteria for a variety of linear viscoelastic solids. This principle arises because of the similarity which exists between the governing viscoelastic equations after Laplace transforms with respect to time and the corresponding untransformed elastic equations. We may therefore use this correspondence to write down immediately the Laplace transforms of the associated viscoelastic expressions. By inverting these transformed equations, we may thus finally obtain formulae describing the energy fracture criteria of Maxwell, standard linear and Burgers solids, respectively.The analysis of this paper investigates the application of the energy balance fracture criteria to linear viscoelastic bodies. It is shown that:(a) The energy release rates of viscoelastic cracked bodies may be divided into two parts. One describes the effect of retarded elasticity, another part describes the effect of viscous flow;(b) Burgers solids, as well as Maxwell solids, exists a critical state. Because of the viscous flow, this state will arrive sooner or late:(c) The crack wilt propagate with high speed as soon as critical state of cracked bodies arrives;(d) In contrast to Maxwell and Burgers bodies, for standard linear cracked bodies, there exist a value of the load below which the critical state will never occur, exceed which then they will attain to the critical state sooner on later.

The creep of concrete considering the delayed effect of elasticity is a deve-lopment of the applied creep theory. The procedure of estimating the stress re-distribution due to creeping of concrete of a segmentally cast continuous stru-cture loaded at different age of concrete, can be simplified by use of the mo-dified modulus of elasticity E.=E/1+ρφ, but the determination of the coeffi-cient ρ in [2] involves a lot of diagrams based on different ages of loadingτ_?.,theoretical thickness of members h_(?), the...

The creep of concrete considering the delayed effect of elasticity is a deve-lopment of the applied creep theory. The procedure of estimating the stress re-distribution due to creeping of concrete of a segmentally cast continuous stru-cture loaded at different age of concrete, can be simplified by use of the mo-dified modulus of elasticity E.=E/1+ρφ, but the determination of the coeffi-cient ρ in [2] involves a lot of diagrams based on different ages of loadingτ_?.,theoretical thickness of members h_(?), the final yielding flow φ_(fk) and de-layed effect of elasticity φ_d,that leads to a complicated computer work. Thecoefficient ρ proposed by the author here taking account of delayed effect ofelasticity gives a result well consistent with that calculated by the former co-efficient. Derivation of formulas for calculating stress redistribution by finite ele-ment method is given in this paper, and some examples by hand calculation arealso given as an illustration.

This paper discusses the relationship between wood creep and stresslevel of poplar under different moisture content. The results are: at 28% moisture content the instantaneous elastic, delayedelastic and viscous deformation are increased with stress level at 13% moisture content the instantaneous elastic deformation is increased with stress level while the delayed elastic and viscous deformation are almost independent of the stress level.