英语翻译3.1.Mathematical representation of joint’s characteristi

英语翻译
3.1.Mathematical representation of joint’s characteristics
Mathematical representation of the joint characteristics(in the form of curve-fitting equations) have been proposed to represent the moment–rotation data of the joint generated from experimental tests in a numerical form suitable to be incorporated in the analytical models.In order to achieve acceptable results,these expressions should have the capability of representing the entire response of the joint.Due to the number of parts in a
connection (plates,bolts,welds,sections),the response of joints to loading is usually complicated and moment–rotation relationships are generally non-linear.Such behaviour can be represented in a number of different ways with various levels of complexity.In simplified analytical models,simple forms of mathematical representation such as bi-linear,tri-linear and multi-linear forms of curve fit are adequate to describe the behaviour of the joint.More advanced mathematical expressions are usually adopted to
represent the joint’s characteristics in sophisticated analysis such as finite element models.Fig.2 shows different forms of curve-fitting representations of joint’s behaviour.

3.1 .数学的代表联合的特点
数学的代表联合的特点（在的形式,曲线拟合方程）已提出要代表时刻旋转数据的联合所产生的实验测试,在一个合适的数值形式,以便纳入分析模型.在为了达到可接受的结果,这些表现形式应该有能力代表整个反应的联合.由于零部件的数量在一
连接（板,螺栓,焊缝,部分） ,反应关节负荷通常是复杂的时刻旋转的关系,一般非线形.这种行为可以代表在许多不同的方式与不同层面的复杂性.在简化的分析模型,简单的数学形式的代表性,如双向线性,三线性和多元线性形式的曲线拟合是足够的来形容的行为联合.更先进的数学表达式,通常采用
代表联合的特点,在精密的分析,例如有限元模型.图.2显示了不同形式的曲线拟合交涉,联合的行为.
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