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題 名 | The Effect of Physical Aging on the Viscoelastic Response of Cross-ply Laminates to In-plane Compression=物理老化對承受軸向壓力正交積層板黏彈反應之影響 |
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作 者 | 黃男農; 陳信榮; 李全發; | 書刊名 | 中國工程學刊 |
卷 期 | 21:2 1998.03[民87.03] |
頁 次 | 頁159-170 |
分類號 | 440.2 |
關鍵詞 | 物理老化; 黏彈; 積層板; 軸向壓力; Physical aging; Viscoelastic; Laminate; In-plane compression`; |
語 文 | 英文(English) |
中文摘要 | 本文探討物理老化現象對簡支撐對稱正交積層板黏彈行為之影響。積層板承受軸 向壓力且具撓度缺陷。舖層受軸向力潛變及受剪力潛變具有不同的老化轉移速率。 文中利用等效時間理論來建立舖層應力-應變關係式。藉由拉普拉式轉換及數值積分技巧, 由相容方程式求得應力函數。再利用Galerkin方法由力矩方程式求出撓度之約略解。 文中範例顯示物理老化效應及承載前預先老化時間對於積層板潛變行為之影響。 |
英文摘要 | The viscoelastic behaviors of simply-supported, cross-ply laminates with a physical aging phenomenon are examined. The laminates considered are under uniaxial in-plane compression and have various amplitudes of initial imperfection. Laminae exhibit different aging shift rates for the creep responses to the axial and shear loadings. The effective time theory is employed to construct the stress-strain relations. The stress function is obtained by solving the compatibility equation by the use of the Laplace transform and a numerical integration scheme. Deflections are calculated from the moment equation by the Galerkin method in conjunction with the numerical integration. Numerical results of creep deflections, edge shortenings and stress resultants for graphite-reinforced thermoplastic and glass-reinforced thermosetting laminates are presented. The effects of physical aging, pre-loading aging time, and the amplitude of imperfection on the creep responses are illustrated in the numerical examples. |
本系統中英文摘要資訊取自各篇刊載內容。