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Temperature control of transfer roller’s bearing based on finite element analysis
Peng ZHANG, Yourong LI, Han XIAO
《机械工程前沿(英文)》 2009年 第4卷 第2期 页码 215-218 doi: 10.1007/s11465-009-0026-9
关键词: transfer roller bearing finite element analysis sub-model temperature control
Vibratory behaviors of Jeffcott system on cylindrical roller bearings
Hao WU, Jianwen WANG, Qi AN
《机械工程前沿(英文)》 2009年 第4卷 第3期 页码 305-309 doi: 10.1007/s11465-009-0036-7
关键词: roller bearing bearing-rotor system design value critical rotational speed
刘劲军,夏新涛,张立红
《中国工程科学》 2008年 第10卷 第7期 页码 112-117
以30204型圆锥滚子轴承试验数据为基础,利用灰色模糊聚类分析方法对影响圆锥滚子轴承振动的 因素进行了综合分析,将圆锥滚子轴承各项参数按其对振动的影响分为三类:第一类对振动的影响最大,其 中包括滚子凸度、滚子直径偏差Dw 等参数;第二类对振动的影响较大,其中包括内滚道圆度,内滚道直线性 Li 等参数;第三类对振动的影响最小,其中包括内滚道波纹度,内滚道的角度偏差Δ2β 等参数。根据分类可 知,试验中圆锥滚子轴承的大部分参数都会对振动产生较大的影响。
Finite element modeling of counter-roller spinning for large-sized aluminum alloy cylindrical parts
Dawei ZHANG, Fan LI, Shuaipeng LI, Shengdun ZHAO
《机械工程前沿(英文)》 2019年 第14卷 第3期 页码 351-357 doi: 10.1007/s11465-019-0528-z
关键词: large-sized cylindrical part counter-roller spinning aluminum alloy finite element method distributed power
Hui Ching FAN, Hong Sen YAN
《机械工程前沿(英文)》 2012年 第7卷 第1期 页码 5-15 doi: 10.1007/s11465-012-0310-y
Without modifying the cam contour, a cam mechanism with a variable input speed trajectory offers an alternative solution to flexibly achieve kinematic and dynamic characteristics, and then decrease the follower’s residual vibration. Firstly, the speed trajectory of cam is derived by employing Bezier curve, and motion continuity conditions are investigated. Then the motion characteristics between the plate cam and its roller follower are derived. To analyze the residual vibration, a single degree of freedom dynamic model of the elastic cam-follower system is introduced. Based on the motion equation derived from the dynamic model, the residual vibration of the follower is yielded. The design procedure to improve the kinematic and dynamic motion characteristics is presented and two design examples with discussions are provided. Finally, the simulations of the kinematic and dynamic models by ADAMS are carried out and verified that the design models as well as the performances of the mechanism are feasible.
关键词: cam mechanism variable input speed kinematic design dynamic design optimal design
Walha LASSAAD, Tounsi MOHAMED, Driss YASSINE, Chaari FAKHER, Fakhfakh TAHER, Haddar MOHAMED
《机械工程前沿(英文)》 2013年 第8卷 第2期 页码 127-136 doi: 10.1007/s11465-013-0254-x
In this paper we investigate the nonlinear dynamic behaviour of a cam mechanism with oscillating roller follower in presence of defects. The nonlinear developed lumped-mass model includes eight degrees of freedom with two nonlinear hertzian contacts. The first one is located between cam and first roller while the second is between second roller and the sliding rod. The nonlinear dynamic behaviour is described by second order differential equations which are resolved by using the implicit Newmark algorithm combined with the Newton-Raphson iterative scheme. The influence of the cam profile error on the dynamic behaviour is also investigated.
关键词: cam nonlinear behaviour oscillating roller follower profile error
Iterative HOEO fusion strategy: a promising tool for enhancing bearing fault feature
《机械工程前沿(英文)》 2023年 第18卷 第1期 doi: 10.1007/s11465-022-0725-z
关键词: higher order energy operator fault diagnosis manifold learning rolling element bearing information fusion
龙运佳,杨勇,王聪玲
《中国工程科学》 2000年 第2卷 第9期 页码 76-79
为将混沌振动力学的理论研究转化为压路机工程的新技术成果,研制了三种混沌振动压路机(0.75t,10t,14t),并进行了振动测试、数值仿真与压实试验,证明混沌振动压路机比普通振动压路机提高工效12.2%。其中,14t重型混沌振动压路机已用于我国西部高速公路开发。
New analysis model for rotor-bearing systems based on plate theory
Zhinan ZHANG, Mingdong ZHOU, Weimin DING, Huifang MA
《机械工程前沿(英文)》 2019年 第14卷 第4期 页码 461-473 doi: 10.1007/s11465-019-0525-2
关键词: rotor-bearing system rolling element bearing plate theory finite element analysis
API-based assessment on urban air environment bearing capability in China
Jinnan WANG,Jing ZHANG,Hongqiang JIANG,Yaling LU
《环境科学与工程前沿(英文)》 2015年 第9卷 第6期 页码 1049-1055 doi: 10.1007/s11783-014-0662-0
关键词: air pollution index (API) air environment bearing capability key city assessment method
The convexity about ultimate bearing hypersurfaces of structures
Chengxi GUO,Tingting GUO
《结构与土木工程前沿(英文)》 2016年 第10卷 第4期 页码 456-461 doi: 10.1007/s11709-016-0334-1
关键词: service limit load ultimate bearing surface convexity generalized force generalized displacement frame structure
Foundations bearing capacity subjected to seepage by the kinematic approach of the limit analysis
Mehdi VEISKARAMI, Ghasem HABIBAGAHI
《结构与土木工程前沿(英文)》 2013年 第7卷 第4期 页码 446-455 doi: 10.1007/s11709-013-0227-5
关键词: foundation bearing capacity limit analysis numerical computation plasticity seepage
Undrained seismic bearing capacity of strip footing adjacent to a heterogeneous excavation
《结构与土木工程前沿(英文)》 2023年 第17卷 第4期 页码 566-583 doi: 10.1007/s11709-023-0905-x
关键词: excavation finite element limit analysis heterogeneous soil strip footing undrained bearing capacity
Influence of the Mechanical Seals on the Dynamic Performance of Rotor–Bearing Systems
XU Hua, ZHU Jun
《机械工程前沿(英文)》 2006年 第1卷 第1期 页码 96-100 doi: 10.1007/s11465-005-0008-5
In this paper, to consider the effects of mechanical seals, a lumped-mass model and the transfer matrix method are used to establish the equations for the dynamics performance of rotor bearing system. The general inverted iteration method is also used to solve the eigenvalue problem of these equations. To check the response of the rotor bearing system under unbalance motivation, the Gauss method is used to calculate the dynamic response of the constrained vibration. The results, based on the dynamic properties calculation of a typical mechanical spiral seal, such as stiffness coefficients and damping coefficients, exert the influence of the mechanical seal on the rotor bearing system of the high-speed machinery. Meanwhile, some structure parameters that may affect the dynamic performance and forced vibration under unbalance motivation of the rotor bearing system considering mechanical seals are analyzed in the paper. The analysis results show that the mechanical seal more or less has effects on the rotor bearing system. The mechanical seal has much more effects on the flexible rotor bearing system than on the rigid one. For instance, in a certain case, if the effects of the mechanical seal were taken into account, the system s critical speed may increase by 70 80%.
标题 作者 时间 类型 操作
Temperature control of transfer roller’s bearing based on finite element analysis
Peng ZHANG, Yourong LI, Han XIAO
期刊论文
Vibratory behaviors of Jeffcott system on cylindrical roller bearings
Hao WU, Jianwen WANG, Qi AN
期刊论文
Finite element modeling of counter-roller spinning for large-sized aluminum alloy cylindrical parts
Dawei ZHANG, Fan LI, Shuaipeng LI, Shengdun ZHAO
期刊论文
On the improvement design of dynamic characteristics for the roller follower of a variable-speed plate
Hui Ching FAN, Hong Sen YAN
期刊论文
Nonlinear dynamic behaviour of a cam mechanism with oscillating roller follower in presence of profile
Walha LASSAAD, Tounsi MOHAMED, Driss YASSINE, Chaari FAKHER, Fakhfakh TAHER, Haddar MOHAMED
期刊论文
New analysis model for rotor-bearing systems based on plate theory
Zhinan ZHANG, Mingdong ZHOU, Weimin DING, Huifang MA
期刊论文
API-based assessment on urban air environment bearing capability in China
Jinnan WANG,Jing ZHANG,Hongqiang JIANG,Yaling LU
期刊论文
Foundations bearing capacity subjected to seepage by the kinematic approach of the limit analysis
Mehdi VEISKARAMI, Ghasem HABIBAGAHI
期刊论文