This paper presents a numerical method called the finite strip plasticity coefficient increment initial stress method for sloving the ultimate load of elastic-plastic stability of steel columns. Step loading and finite strip principle are employed to establish the incremental equilibrium equation of structures.

Secondly, the method is generalized to the case of multi-stage loading, and the settlement parameters in each stage loading are calculated like as in the single-stage loading.

Based on the unified creep model and the relevant creep equations,the creep properties of rock under step load is studied,and the corresponding creep parameters by fitting curves are obtained.

And based on the section model of the parameter of consolidation and pressure proposed after the consolidation test of structured soft clay, the consolidation calculation method of multi-layer sand-wall ground considering the structure character of soft clay changed with the depth and the staged loading is provided.

In the use of MARC, simulates the relative slip between the pile and the soil by the definition of contact body, realizes the stepping load of the embankment which make the simulation more close to the engineering practice.

strain developed in a specimen under step-by-step loading was measured.

In this paper, to begin with, the nonlinear differential equations of a truncaled shallow spherical shell with variable thickness under uniformly distributed load are linearized by step-by-step loading method.

One-dimensional wave propagation in column under step loading and impulsive loading are analyzed with the developed finite element program.

The quasi-static behavior of the viscoelastic Timoshenko beam under step loading is analyzed and the analytical solution is obtained.

The quasi-static behavior of the viscoelastic Timoshenko beam under step loading was analyzed and the analytical solution was obtained in the Laplace transformation domain.

Let its dynamic buckling under step load be reduced to a bifurcation problem caused by the propagation of axial elastic-plastic stress wave.

The infinitely long layers are joined together by an elastic bonding agent and one of the layers is subjected to a step load which moves with a constant speed along the layer.

Metastability and chaoslike phenomena in nonlinear dynamic buckling of a simple two-mass system under step load

Nonlinear dynamic buckling of nonlinearly elastic dissipative/nondissipative multi-mass systems, mainly under step load of infinite duration, is studied in detail.

A set of wave propagation and structural dynamics problems, subjected to various load forms such as Heaviside step load, triangular blast load and ramped wind load, are modelled using the new approach.

These results suggest that cardiac baroreflex sensitivity remain unchanged during graded loading of the cardiopulmonary baroreceptors in heat-stressed humans.

Theoretical principles are given for the computer-aided design of functionally graded materials (FGM) for use under graded loading.

In this paper FEM is used for stress analysis of a bifurcated penstock with a crescent rib carrying the internal water pressure and working in the embedded and open states separately.To investigate the influence of surrounding rock and concrete to the stress of bifurcated pipe, emphasis is laid on the embedded type bifurcated pipe in which both the elastic resistance pf rock around it and the gap between the pipe and backfilled concrete are taken into consideration.The step-loading and one-step-loading methods...

In this paper FEM is used for stress analysis of a bifurcated penstock with a crescent rib carrying the internal water pressure and working in the embedded and open states separately.To investigate the influence of surrounding rock and concrete to the stress of bifurcated pipe, emphasis is laid on the embedded type bifurcated pipe in which both the elastic resistance pf rock around it and the gap between the pipe and backfilled concrete are taken into consideration.The step-loading and one-step-loading methods are suggested to calculate the stress of the bifurcated penstock. Rock and backfilled concrete are regarded as Winkler foundation. The stress distribution patterns thus obtained are quite similar in both methods, and the difference between the maximum values of principal stress is about 10%. Stress analysis on several kinds of surrounding rock have been made by the one-step-loading method.A useful criterion is furnished in this paper for further investigation of embedded bifurcated penstock with a crescent rib.

Through experimental research, the properties of compression creep are illustrated in the paper for various typical asphalt-sackcloth samples by one stage and stages loading methods. It indicates that asphalt-sackcloth materials possess visco-elastic property and the deformation-time relationship basically coincides with the four-parameter of visco-elastic fluid model. The basical methods for solving the four-parameter by using experimental data are also introduced. The model transformation relationship derived...

Through experimental research, the properties of compression creep are illustrated in the paper for various typical asphalt-sackcloth samples by one stage and stages loading methods. It indicates that asphalt-sackcloth materials possess visco-elastic property and the deformation-time relationship basically coincides with the four-parameter of visco-elastic fluid model. The basical methods for solving the four-parameter by using experimental data are also introduced. The model transformation relationship derived theoretical]y is verified by the experimental result. A real problem has been solved by using the viscoelastic theory, the model transformation relationship and the result of the test.

With the loading way being graded and the measurement being indepen dent at same accuracy, the article discusses the calculation method of material elastic modulus. A calculation formala with approaching method to straight line is advanced and errors of each calculation method are analysed.