Rate-Dependence of Off-Axis Tensile Behavior of Cross-ply CFRP Laminates at Elevated Temperature and Its Simulation

• TAKEUCHI Fumi

  Graduate School of Systems and Infomation Engineering, University of Tukuba

• KAWAI Masamichi

  Graduate School of Systems and Infomation Engineering, University of Tukuba

• ZHANG Jian-qi

  Graduate School of Systems and Infomation Engineering, University of Tukuba

• MATSUDA Tetsuya

  Graduate School of Systems and Infomation Engineering, University of Tukuba

Bibliographic Information

Other Title

• クロスプライＣＦＲＰ積層板の高温における非主軸引張挙動の速度依存性とその解析
• クロスプライ CFRP セキソウバン ノ コウオン ニ オケル ヒシュジク ヒッパリ キョドウ ノ ソクド イゾンセイ ト ソノ カイセキ

Abstract

The present paper focuses on experimental verification of the ply-by-ply basis inelastic analysis of multidirectional laminates. First of all, rate-dependence of the tensile behavior of balanced symmetric cross-ply laminates of T800H/epoxy under off-axis loading conditions at 100°C is examined. Uniaxial tension tests are performed on plain coupon specimens with various fiber orientations (θ=0, 5, 15, 45, and 90°) at two different strain rates (1.0%/min and 0.01%/min). The off-axis stress-strain curves exhibit marked nonlinearly for all off-axis fiber orientations except for the fiber directions θ=0 and 90°, regardless of the strain rates. The strain rate has appreciable influences on the off-axis flow stress in the regime of nonlinear response as well as on the off-axis elastic modulus in the regime of linear response. The macromechanical model based on a ply viscoplasticity model and the classical laminated plate theory is applied to the rate-dependent off-axis nonlinear behavior of the cross-ply CFRP laminates. The material constants involved by the ply viscoplasticity model are identified on the basis of the experimental results on the unidirectional laminate of the same carbon/epoxy system. It is suggested that good agreements between the predicted and the observed results can be obtained by taking into account the fiber rotation induced by deformation and rate-dependence of the moduli.

Journal

• Journal of the Japan Society for Composite Materials

  Journal of the Japan Society for Composite Materials 32 (6), 254-261, 2006

  The Japan Society for Composite Materials

Details

• CRID: 1390282679600472704
• NII Article ID: 10023982349
• NII Book ID: AN00196748
• DOI: 10.6089/jscm.32.254
• ISSN: 18848559
• ISSN: 03852563
• NDL BIB ID: 8580990
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8580990
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed