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首页> 外文期刊>Journal of pulp and paper science >Out-of-Plane Shear of Paperboard under High Compressive Loads
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Out-of-Plane Shear of Paperboard under High Compressive Loads

机译：高压缩载荷下纸板的平面外剪切

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摘要

In this paper, existing equipment for measuring out-of-plane shear in thin compliant materials was extended with anew clamp that enabled shear testing under high compressive loads. The equipment was applied for testing of a commercial paperboard under various uniaxial and biaxial loadings. The new setup proved to work satisfactorily. In out-of-plane shear testing under a constant compressive load, the paperboard material eventually reached a frictional type of behaviour, i.e. a constant shear load at constant normal load. At low compressive loads, this occurred after a peak in the shear stress-strain curve while, at high compressive loads, it was reached asymptotically without a peak load. The magnitude of the peak shear stress was shown to be a function of the plastic deformation in the thickness direction of the paperboard material. The elastic part of the deformation in compression showed a nonlinear behaviour that resembles that of other porous materials.
机译：在本文中，使用新的夹具扩展了用于测量薄柔顺材料中平面外剪切力的现有设备，该设备能够在高压缩载荷下进行剪切测试。该设备用于在各种单轴和双轴载荷下测试商用纸板。新设置证明可以令人满意地工作。在恒定压缩载荷下的平面外剪切测试中，纸板材料最终达到了摩擦类型的行为，即在恒定法向载荷下具有恒定剪切载荷。在低压缩负载下，这发生在剪切应力-应变曲线的峰值之后，而在高压缩负载下，渐近地达到，没有峰值负载。峰值剪切应力的大小显示为纸板材料厚度方向塑性变形的函数。压缩变形的弹性部分表现出类似于其他多孔材料的非线性行为。

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