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一、经典理论与非经典理论结构分析是力学学科中与当代科学技术各领域密切相关的一个应用学科分支,凡作用有载荷的各种机械与设施之设计计算与研究总离不开结构分析这一环节.而近百年来得到发展与广泛应用的受弯构件(梁、拱、框、箱、板、壳等)分析方法主要属于结构分析的经典弯曲理论范畴.经典弯曲理论采用所谓Kirchhoff“直法线”假定.由于这一假定使复杂的连续介质力学理论应用于大部分结构构件的计算成为可行.这一假定的提出与相应的经典理论的建立与发展对于近世纪
First, the theoretical analysis of classical theory and non-classical theory is a branch of applied disciplines closely related to all fields of contemporary science and technology in the discipline of mechanics. The design calculation and research of all kinds of machinery and facilities with loads are inseparable from the structural analysis. A link. The analysis methods of bending members (beams, arches, frames, boxes, plates, shells, etc.) that have been developed and widely used in the last hundred years mainly belong to the classical bending theory category of structural analysis. The classical bending theory adopts the so-called Kirchhoff “straight. The “normal” assumption assumes that the application of the complex continuum mechanics theory to the computation of most structural members becomes feasible due to this assumption. This hypothesis is proposed and the corresponding classical theory is established and developed for the near century.