【摘 要】
：
随着螺旋钻采煤机的大量使用,其安全问题受到广泛关注。而弹性杆-圆柱体缠绕系统作为煤钻杆等工程构件的力学模型,其平衡安全问题已成为煤炭开采领域的研究热点。基于Kirchho
论文部分内容阅读
随着螺旋钻采煤机的大量使用,其安全问题受到广泛关注。而弹性杆-圆柱体缠绕系统作为煤钻杆等工程构件的力学模型,其平衡安全问题已成为煤炭开采领域的研究热点。基于Kirchhoff理论讨论弹性杆-圆柱体缠绕系统在忽略重力时的平衡问题。以描述截面姿态的欧拉角为变量,建立数学模型及平衡方程,导出弹性杆-圆柱体缠绕系统在忽略重力时的平衡存在条件。
With the extensive use of auger shearer, its safety issues have drawn wide attention. The elastic rod-cylinder winding system as a mechanical model of coal-boring rod and other engineering components, the balance of safety has become a hot topic in the field of coal mining. Based on Kirchhoff theory, the balance problem of elastic rod - cylinder winding system ignoring gravity is discussed. Taking the Euler angles describing the cross-sectional attitude as the variables, the mathematical model and the equilibrium equation are established, and the existence conditions of equilibrium for elastic rod-cylinder winding system are deduced.
其他文献
A new cyclic peptide, prepatellamide A (1), along with three known cyclic peptides (2)-(4), was isolated from the ascidian Lissoclinum patella. The structure of
AlN and Al2N2 have been observed in the record of time-of-flight mass-spectra as positive ions. Associating with density functional theory(DFT) B3LYP method wit
给出了垦区农场种植业种植计划的线性规划模型,以此为基础建立了模糊线性规划模型,并讨论了该模型的求解方法.本文还应用该模糊规划方法给出了牡丹江垦区某农场种植业的最优
Matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) has been combined with immobilized enzyme microreactor for the rapid, sensitive, and ac
A titration microcalorimeter with the sample cells of 1 mL and 3 mL volume was constructed by combining LKB-2107 ampule microcalorimeter with an improved Thermo
By soft chemical processing, two kinds of nanoscaled lanthanum manganite granular composites, La0.7Sr0.3MnO3/CoFe2O4 (LSMO/CF) and La0.7Sr0.3MnO3 / Nd0.7Sr0.3Mn
Studies on the catalytic reaction mechanism of L-lactate dehydrogenase have been carried out by using quantum chemical ab initio calculation at HF/6-31G* level.
The binding equilibrium between I- and human serum albumin (HSA) or bovine serum albumin (BSA) has been studied by means of the resonance Rayleigh scattering (R
螺杆空压机是煤矿通用机械之一,针对龙岩市某煤矿螺杆空压机实际运行中振动超标的故障,采用频谱分析法,发现以啮合频率为中心,以星轮频率为间隙的一系列频带才是故障表现出的
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7