Development of Strength Criteria of Plate Structures under Biaxial Compression and Lateral Pressure

双轴压缩和侧压板结构强度准则的制定

• 批准号: 62850077
• 负责人: OKADA Hiroo
• 金额: $ 3.39万
• 依托单位: The University of Osaka Prefecture
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-62850077/
• 关键词: Combined loads; plate structures; buckling; ultimate strength; effective breadth; probabilistic collapse analysis; dominant failure mode; 破損確率; 水圧と2軸圧縮

1. A method is proposed for the strength evaluation of plate panels under combined biaxial compression and lateral pressure. The validity of proposed method is demonstrated through systematically parametric studies for long rectangular plates and comparison with previous studies.2. A system is developed for reliability assessment of plate structures which are modelled as plane frame structures and subjected to combined biaxial compression and lateral pressure, based on ultimate collapse analysis.(1) Ultimate collapse is evaluated by using a linearized failure condition of the section under the combined effect of biaxial bending moment, torsional moment, shearing forces and axial force.(2) A matrix method combined with plastic node method is used to generate the safety margins of ultimate collapse modes.(3) Probabilistically dominant collapse modes are selected by applying the socalled branch-and-bound method.3. These methods are applied to a few plate structures with orthogonal stiffeners. The validity of proposed methods is demonstrated through numerical examples and comparison with other studies.

1. 提出了一种双轴压缩与侧压联合作用下板的强度评定方法。通过对长矩形板进行系统的参数化研究，并与前人的研究结果进行比较，验证了所提方法的有效性。提出了一种基于极限倒塌分析的平面框架结构双轴压缩和侧向压力联合作用下板结构可靠度评估系统。(1)采用双轴弯矩、弯矩、剪力和轴力共同作用下截面的线性化破坏条件来评估其极限破坏。(2)采用矩阵法与塑性节点法相结合的方法计算了极限破坏模式的安全裕度。(3)采用分支定界法选择概率优势坍缩模式。将这些方法应用于几种正交加劲板结构。通过数值算例和与其他研究的比较，验证了所提方法的有效性。

项目成果

H. Okada;et al: "A Method for Reliability Assessment of Plate Structures under Combined Loads Based on Ultimate Strength" 8th Symposium on Reliability Engineering, The Society of Material Science, Japan. 134-139 (1988)

H. Okada 等人：“基于极限强度的组合载荷下板结构的可靠性评估方法”第 8 届可靠性工程研讨会，日本材料科学学会。

岡田博雄 他: 日本材料学会、第8回信頼性工学シンポジウム. 134-139 (1988)

Hiroo Okada 等人：第 8 届可靠性工程研讨会，日本材料科学学会 134-139 (1988)。

岡田博雄,室津義定,上山圭司: 日本材料学会、第八回信頼性工学シンポジウム. 134-139 (1988)

Hiroo Okada、Yoshisada Murotsu、Keiji Ueyama：第八届可靠性工程研讨会，日本材料科学会 134-139 (1988)。