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机械设计
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  course of mechanical design
     Teaching Methods on Course of Mechanical Design Basic
     《机械设计基础》教学方法探讨
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     Through an analysis of contemporary students' psychological feature in connection with the course of Mechanical Design, this paper has made an effort to broaden their knowledge scope and foster their enterprising spirit.
     通过分析当代大学生的听课心理特征,结合《机械设计》课程,在拓宽学生的知识面,培养他们创新能力方面做了一些尝试。
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  “《机械设计”译为未确定词的双语例句
     Teaching the Mechanical Design
     《机械设计》课程的教学方法探讨
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     Reform on the Teaching of 《Machine Design Foundation》
     《机械设计基础》课程教学改革的基本思路
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     The Application of CAI in Teaching of "Mechanical Design
     CAI在《机械设计》教学中的应用
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     Using CAD Technology in Machine Course Design
     CAD技术在《机械设计》课程设计中的应用
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     The Teaching Practice Knowledge of the Course Machinery Design Basis A
     《机械设计基础A》课程教学实践体会
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  相似匹配句对
     4. The mechanica
     4. 机械设计
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     The Design of Mechanic Filter
     机械滤波器的设计
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     Probe to Teaching of MACHINE DESIGN
     机械设计》教学初探
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     To design the G.
     在设计G.
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     Design
     设计
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Present mechanical design techniques (including fatigue design) dependon "factor of safety" to compensate for limited knowledge of materials andloads. The resulting design is probably considerably heavier than necessary.An approach to reliability is one method of light designs which is importantin varied fields, as design of some structures and components of aerospace,aeroplane and automobile technology, etc.. Since many of the parameters taking places in fatigue design as load,material strength and geometric...

Present mechanical design techniques (including fatigue design) dependon "factor of safety" to compensate for limited knowledge of materials andloads. The resulting design is probably considerably heavier than necessary.An approach to reliability is one method of light designs which is importantin varied fields, as design of some structures and components of aerospace,aeroplane and automobile technology, etc.. Since many of the parameters taking places in fatigue design as load,material strength and geometric properties of component, are statistical innature. Distributions are assumed to be normal and to vary independentely.The curves of strength and stresse distribution will form an overlap areawhich characterizes the fact that stress has exceeded strength and so thecomponent will be fail. Introducing the algebra of normal functions and the Goodman's diagrammodified by statistical method, the approach of reliability in fatigue designwill be given.

目前的机械设计方法(包括疲劳设计)是依靠“安全系数”来补偿对材料及载荷知识的不足,所得的设计可能比必需的要笨重得多。可靠性设计是减轻重量的一种设计方法,这种设计可应用于不同的领域中,如航天、航空和汽车等的某种结构及零件的设计。 由于在疲劳设计中的很多参数,如载荷、材料强度和零件的几何尺寸,都是具有统计特性的,假设这些参数都为正态分布并彼此独立的。强度及应力两个分布曲线存在有一个重叠面积,它表征了应力超过强度或零件要破坏的情况。 引入正态分布函数的代数及用统计法修正的Goodman图线,作出了疲劳强度的可靠性设计。

In the present paper, problems on axisymmetrie deformation of a finite hollow cylinder are investigated. Displacements and stresses in such a cylinder under general axisymmetrie loads are formulated in forms of two infinite series - Fourier series and Fourier-Bessel series. Due to the orthogonality properties of the series, referring to any prescribed boundary conditions, the coefficient of each term in one series can always be expressed in a linear function of the coefficients of the other series. Final solution...

In the present paper, problems on axisymmetrie deformation of a finite hollow cylinder are investigated. Displacements and stresses in such a cylinder under general axisymmetrie loads are formulated in forms of two infinite series - Fourier series and Fourier-Bessel series. Due to the orthogonality properties of the series, referring to any prescribed boundary conditions, the coefficient of each term in one series can always be expressed in a linear function of the coefficients of the other series. Final solution may thus be obtained from the solution of these simultaneous equations, and it becomes exact in the limit as more terms of the series are taken.The paper treats, in particular, the end problems of finite hollow cylinders. To illustrate the method of solution, an example with practical interest is given in the paper. Numerical computations are made for some displacements and stresses. The results are plotted in graphs and compared with those from 'approximate calculations often used in machine design. Appreciable discrepancies between them are found in this particular case. It should draw special attention to the designers.

本文对一个有限空心圆柱的轴对称变形问题作了分析研究.文中将这类圆柱在一般轴对称载荷作用下的位移和应力的解表达成富氏级数和富氏一贝塞耳级数两个无穷级数之和的形式.由于级数的正交性质,对应于特定的边界条件,其中一个级数的任一项系数总可表成另一级数各项系数的线性组合形式.于是通过这些联立方程的求解即可求得问题的解;且随取用级数项的增多而趋于精确值.文中特别处理了有限空心圆柱的端面问题.给出了一个具有实际意义的例题;并对其部分变形和应力进行了数值计算,与机械设计中常用的近似估算加以比较.结果表明,二者具有明显的差异.这点设计工作者应加以注意.

A general survey of the application of optimization techniques to themachine design is given.The survey begins with the mathematical modelof optimum design problem,and then illustrates the procedure and methodsof solving optimum design problems.Some examples of practical designproblem are given as well.

本文对最优化技术在机械设计中的应用作一概括的介绍,包括机械设计最优化问题的数学模型、解题的方法与步骤。

 
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