This paper theoretically analyzes the critical force in metal hoisting boom structure of lattice type and variable section.
本文对格构式变截面吊臂金属结构的临界力计算作了理论分析。
A dynamic model for maize stem is established, a formula about critical force of maize stem is extracted by using dynamic theory and method.
建立了玉米茎秆的力学模型，利用力学理论和方法，给出了玉米茎秆临界力的具体表达式。
Further, by making use of indetermined form appearing in the deflection equation, we can find out the formula for calculating the critical force.
再利用出现在挠度方程中的不定型式，我们可以找出计算临界力的公式。
The results show that the cloverleaf kuntschner's bucking critical force involving muscular effect is 51per cent less than under simple compression.
得出了三叶瓣型髓内钉在涉及肌肉影响时的屈曲临界压力比单纯受压时髓内钉的屈曲临界压力小51％。
The precise critical force of a system can be deduced from the fact that the determinant of stiffness matrix of the system is equal to zero in the critical condition.
由结构刚度矩阵行列式值为零的失稳条件导出结构失稳特征方程，从而精确地确定系统临界力值。
The paper analyses the stability of rib slab on method of energy, the formula of longitudinal critical force is deduced, and rational arrangement of stiffening rib is discussed.
利用能量法分析了加肋平板的稳定问题，推导了纵向临界力的计算公式，并探讨加劲肋的合理布置。
Considering the inertial eccentric force and the weight of the drill string, we find that the axis critical force will be obviously less than that under the static state, which wil...
综合考虑钻柱惯性离心力和自重的影响，我们发现，在工作状态下，钻柱的临界压力会明显地小于静态时的临界力，这对实际的钻探工程来说具有十分重要的指导意义。
The results show that the sandwich composite beam improves the dynamic critical compression of the simple composite beam and the dynamic critical force varies with the frequency of the excitation.
结果表明夹层复合梁大大提高了简单复合梁的临界力，但它也随激励频率而变化。
Based on energy theory, a simple critical force calculation for pressed beam with variable cross sections is derived. It reduces the complex integration algorithm into a simple algebraic operation.
以能量原理为基础，推导出变截面压杆计算临界力的简便方法，把复杂的积分运算归结为一个简单的代数运算。
Critical force expressions for tower stability are derived using reduced coefficient method and iteration.
对塔身的稳定，用折减系数法及迭代法导出了临界力表达式。
Critical force and deformation of elastic restraint rod not only depend on the rod cross section, but also on the restraint condition.
弹性约束杆之临界力和变形不仅与杆截面特性相关，还取决于约束条件。
Critical force and deformation of elastic restraint rod not only depend on the rod cross section, but also on the restraint condition.
弹性约束杆之临界力和变形不仅与杆截面特性相关，还取决于约束条件。
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