The theoretical and numerical methods of structural design optimization for offshore platforms are studied in this thesis.
本文主要研究了导管架海洋平台结构系统优化设计的理论与数值计算方法。
In research and development of space antenna, the natural characteristic analysis and structural design optimization are very important.
在空间天线结构的研制过程中，结构固有特性分析和结构优化设计是非常重要的两项研究工作。
Structural design optimization is to search out the optimum scheme in all feasible design schemes by comparison with the standards given by designers.
结构优化设计是在所有可行设计方案中，相对于设计者预定的标准找出最优方案。
The evaluation of probabilistic constraints in probabilistic Structural Design Optimization (PSDO) can be carried out using the recently proposed performance measure approach (PMA).
概率结构优化设计(PSDO)中概率约束的评定可以采用最近提出的、被认为更高效、稳定的功能度量法(PMA)。
The research in this thesis provides the valuable reference for the further research and application of big structural optimization design.
本文对大型结构优化设计的深入研究和应用提供了有价值的参考。
A numerical example shows that the structural analysis and optimization design model and method in this paper are valid and feasible.
算例表明：文中提出的随机结构分析和优化模型与设计方法是合理、可行和有效的。
This phenomenon is all existed under various kinds of optimization criterion of the progressive structural optimization design.
在渐进结构优化设计的各种优化判据下都存在这一现象。
The structural dynamic SA in project is of great importance for the study on dynamic design, optimization design, control theory and dynamic modification etc.
工程结构的动态特性灵敏度分析对工程结构的动态设计、优化设计、控制理论和动态修改等方面的研究有着十分重要的意义。
Based on the structural characteristics of bearing flange, the optimization model is established according to the objective function, design variables and constraints, and make a static analysis.
基于支承法兰盘的结构特征，通过目标函数的建立、设计变量的选取以及约束条件的确定建立了优化设计的有限元模型，并对法兰盘进行了静力分析。
At last, the recent applications and researches of multiobjective optimization methods in aircraft structural design are introduced simply.
最后，对多目标优化方法在飞机结构设计中的最新应用研究做了简要的介绍。
To the designers of the gun, the building of FEM model is very useful in structural optimization design by shortening the period of design and reducing work intension.
有限元计算模型的建立，对于火炮结构优化设计、缩短研制周期和降低火炮设计人员的劳动强度都具有重要意义。
The structural analysis and optimization design based on probability have wide engineering background and are of important theoretical significance and research worthiness.
基于概率的结构分析和优化设计有着广泛的工程背景和重要的理论意义与学术价值。
It provides the theoretical basis for structural design and parameter optimization of cutting head.
为截割头的结构设计和参数优化提供了理论依据。
With flexibility coefficients considered as design variables, the model of structural optimization of the POle systems connected by elastic nodes is also built up.
提出了最佳连接的概念，并将节点柔性系数作为设计变量，建立了弹性连接杆系的结构优化模型。
The optimization design model is established for structural parameters of magnetic thrust bearings.
建立了磁悬浮推力轴承结构参数优化设计数学模型。
It has been very important to find very robust and very efficient algorithms for solving optimization problems at structural optimum design.
寻找高度鲁棒的、高效率的优化问题求解算法始终是结构优化设计中一个重要的课题。
Based on the optimization modal in ANSYS, the structural design for the portal framed structure of a double-hull sand dredge was optimized.
基于有限元分析软件ANSYS中的优化技术，采用零阶优化方法对双体采砂船门型架结构进行优化设计。
Test results provide an important basis for strength design and structural optimization of propeller blades.
为螺旋桨桨叶的强度设计与结构优化提供了重要依据。
An analytical model of thermal-hydraulic design and structural optimization was developed for a double-tube bundle heat exchanger of an integrated nuclear reactor.
建立了套管管束式换热器的计算模型，以便进行该种换热器热工水力学设计计算和结构优化。
In structural design and optimization of double hulled ships, it is important to understand the behavior of their structures and energy absorption mechanism in collision events.
深入了解船体结构碰撞损伤特性和能量吸收机制是开展船舶耐撞性优化设计的前提。
A research for structural dynamic optimization design of composite rotor blades is summarized.
本文总结了复合材料旋翼浆叶结构动力优化设计的研究工作。
Among the existing optimum design models, majority only aim at the optimization which just in the definite conditions and the factor of structural reliability is ignored.
现有的结构优化设计模型绝大多数是针对确定性情况下的优化，对工程结构的可靠度考虑不多。
While seeking the scheme of minimum structural volume in engineering design, the optimization issue ought to be considered at the same time.
在工程设计寻求结构体积最小方案时，应同时考虑啮合角的优化问题。
This design software improves the efficiency of structural design and provides a basis for subsequence analysis or optimization.
该系统设计软件提高了光学收发箱体结构设计效率，为后续的分析优化奠定了基础。
So, structural analysis and optimization in design are important for improving the product quality and reducing the production cost.
故在设计阶段对其进行结构分析和优化设计，对提高产品质量、降低生产成本具有十分重要的意义。
Design optimization is becoming increasingly important to the structural engineers.
对结构工程师来说，设计优化正变得日益重要。
The mutual matching of rigidity from three directions between elastic ring and sensor is the core of problem of structural optimization design of piezoelectric milling force-measuring platform.
压电磨削测力平台结构优化设计的核心是弹性环与传感器三向刚度相互匹配的问题。
Besides static strength, the problem of optimization and design was studied when the failure took place owing to structural linear elastic buckling in this paper also.
在开展结构静强度优化设计的同时，对元件在线弹性范围内的屈曲可靠性优化设计问题做了初步的研究。
Besides static strength, the problem of optimization and design was studied when the failure took place owing to structural linear elastic buckling in this paper also.
在开展结构静强度优化设计的同时，对元件在线弹性范围内的屈曲可靠性优化设计问题做了初步的研究。
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