Parameter re‐identification in nanoindentation problems of viscoelastic polymer layers: small deformation
Parameter re‐identification in nanoindentation problems of viscoelastic polymer layers: small deformation
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粘弹性聚合物层纳米压痕问题中的参数重新识别:小变形
DOI:
10.1002/zamm.201100170
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
S. Diebels
中科院分区:
文献类型:
--
作者:
S. Diebels
Recently, nanoindentation became a new but all the same a primary testing technique of thin layers. A wide application of nanoindentation in polymeric layers is obstructed by the analysis method, which is used to extract the rate‐dependent properties. In the present paper, the inverse method based on the finite element simulation and numerical optimisation is used to characterise the viscoelastic properties of polymers from nanoindentation. First of all, the boundary value problems using nanoindentation of polymer layers considering real geometry, is simulated with the FE code ABAQUS®. A linear viscoelastic model for small strain, based on a general Maxwell rheological model is currently applied to describe the rate‐dependent material behaviour. The rate‐dependent properties of the polymer layer under nanoindentation is investigated with various loading histories: cyclic testing, single step relaxation, monotonic testing, and sinusoidal oscillatory testing. A parameter re‐identification strategy offers a deep insight into the relationship between the accuracy of identification and the loading history associated with the rate‐dependent material model. A method to choose a suitable loading history to identify the parameters more accurately is recommended.
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DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
D. Klötzer;C. Ullner;E. Tyulyukovskiy;N. Huber
通讯作者:
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影响因子:
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DOI:
10.1557/proc-1137-ee10-23
发表时间:
2008
期刊:
MRS Proceedings
影响因子:
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10.1557/proc-522-27
发表时间:
1998
期刊:
MRS Proceedings
影响因子:
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通讯作者:
Zhaoyu Chen;S. Diebels