Titlebook: Ultra-low-Cycle Fatigue Failure of Metal Structures under Strong Earthquakes; Liang-Jiu Jia,Hanbin Ge Book 2019 Springer Nature Singapore

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Application to Post-buckling Ductile Fracture of Steel Stub Columns,ding histories. Numerical simulation of the post-buckling ductile cracking of the specimens is conducted, where the simulation results indicate that the crack initiation of the specimens can be evaluated with a favorable accuracy, while further study is required for the crack propagation under ultra-low-cycle fatigue loading.

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Introduction, from high- and low-cycle fatigue problems are explained. Typical ultra-low-cycle fatigue failure of metal structures under strong earthquakes is illustrated, such as post-buckling fracture of steel members and connections, fracture of welded beam-to-column connections. The correlation between the u

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,Stress–Strain Behaviors in Large Plastic Strain Ranges under Monotonic Loading,ss–true strain data till fracture is of great importance for ductile fracture evaluation. Post-necking modification for the true stress–true strain data is required since the stress state after necking is not uniaxial. In this chapter, a modified weighted average method is proposed and compared with

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,Stress–Strain Behaviors in Large Plastic Strain Ranges under Cyclic Loading,e fatigue loading, the corresponding plastic strain level is much larger than conventional engineering problems, where extremely large plastic strain is of concern. In this chapter, a number of classical rate-independent cyclic plasticity models for metal are investigated. Formations and limitations

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Throttle

Ductile Crack Propagation under Monotonic Loading,ack initiates. For most of the cases, a ductile crack propagation rule is required to accurately evaluate the whole cracking process. In this chapter, a crack propagation rule based on an energy balance approach is added to the crack initiation rule in the previous chapter, where deterioration of ma

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Ductile Fracture Model of Structural Steel under Ultra-low-Cycle Fatigue Loading,ng cases. In this chapter, a crack initiation rule by adding a damage accumulation rule under negative stress triaxialities is proposed, where no damage accumulation is assumed for stress triaxialities below ?1/3. This rule is based on previous experimental results. This chapter is mainly focused on

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Application to Post-buckling Ductile Fracture of Steel Stub Columns, Kobe earthquake. This chapter aims to establish a simulation method for the post-buckling cracking process on the basis of formerly proposed cyclic fracture and plasticity models. Experimental tests on twelve heat-treated square hollow section stub columns are carried out under different cyclic loa

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Virtues

Cyclic Plasticity of Aluminum in Large Plastic Strain Ranges,al steel, aluminum has relatively low ductility and is more apt to fail during strong earthquakes. Seismic loading is associated with random strain amplitudes, which makes it necessary to calibrate a plasticity model at the full strain range. Based on the achievements in the previous chapter, this c