Combined plasticity and creep analysis in 2D by means of the boundary element method

León, Ernesto Pineda; Rodríguez-Castellanos, Alejandro; Flores-Guzmán, Norberto; Olivera-Villaseñor, E.

doi:10.1016/j.enganabound.2013.07.010

Cited by 2 publications

(1 citation statement)

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“…However, a reduction in the applied creep stress was observed from the beginning of load application to the end of load application. This descending behavior in the creep stress (constant stress) is believed to be attributable to the mesh refinement and the time step selected to minimize the computational efforts [51,52]. To characterize the long-term deformation of the aquacultural geodesic spherical rigid frame structure, a convergence study was conducted and reported in Table 2 based on the mesh (number of elements) refinement and the time-stem intervals and their effects on the axial deformation and the axial stress in the strut adjacent to the hanging point.…”

Section: Application Of 1d Norton-bailey Time-hardening Power Lawmentioning

confidence: 99%

Modeling the Long-Term Deformation of a Geodesic Spherical Frame Structure Made from Wood Plastic Composite Lumber

2020

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The long-term deformation of a geodesic spherical frame structure with a diameter of 20 m made from wood plastic composite (WPC) lumber (struts) is described using the Norton-Bailey power law model to predict the service life creep behavior (the creep strain ( ε c r )) of the WPC. The Norton-Bailey power law model parameters, A the power law multiplier, n the stress order, and m the time order, were obtained from experimental four-point bending flexural creep measurements of WPC lumber subjected to three levels of flexural stress: 7, 14, and 29% of the ultimate flexural strength for 200 days. The parameters obtained from the experiments showed good agreement to the model of the WPC lumber in flexure. The Norton-Bailey power law parameters were then implemented to describe the long-term deformation of the spherical frame structure. The limit of failure was considered when the WPC creep strain reaches the value of 1%. However, the FEA predicted the maximum creep strain to be 20% of the failure strain. This modeling approach is considered useful to describe and predict the long-term deformation of aquacultural structures made from viscoelastic materials during the envisioned service life (10 years) based on experimental creep data for the members that form the structure.

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Section: Application Of 1d Norton-bailey Time-hardening Power Lawmentioning

confidence: 99%