Results 11 to 20 of about 57,852 (261)

Dynamic and quasi static stiffness characterization of a lamination stack of an electric motor [PDF]

open access: yesHeliyon
The development of electric motors for automotive applications requires precise material models to simulate structural strength and NVH (Noise, Vibration, and Harshness) properties.
V. Szabó, B. Vehovszky, Z.G. Gazdagh
doaj   +2 more sources

ANALYSIS OF BALL SCREW STATIC AXIAL STIFFNESS

open access: yesJixie qiangdu, 2015
Ball screw pairs of high static stiffness is to guarantee the positioning accuracy and speed of ball screw pair a good ability to adapt the key.Considering the influence of deformation on nut assembly static axial stiffness nut bearing radial,based on ...
LI DongJun
doaj   +1 more source

Effects of Bearing Locations on the Characteristics of a Spindle System Supported by Tapered Roller Bearings [PDF]

open access: yes한국정밀공학회지, 2020
This paper presents the effects of bearing locations on the mechanical characteristics of a multi-stepped spindle system related to bearing fatigue life, natural frequency, and static stiffness. The multi-stepped spindle is supported by a pair of tapered
Van-Canh Tong   +2 more
doaj   +1 more source

Measurement for the identification of static and quasi-static rotational stiffness

open access: yesPrecision Engineering, 2021
Abstract Machine tool calibration can be employed to optimise tool path trajectories through on- and off-line compensation of anticipated deflections, which result from a process plan, and to assess the machine tools capability to comply with the geometric dimensions and tolerances of a process plan.
Theissen, Nikolas Alexander   +3 more
openaire   +2 more sources

Stiffness Changes due to Static Loading of a Brick Arch [PDF]

open access: yes12th International Conference on Structural Analysis of Historical Constructions, 2021
A brick arch was loaded under laboratory conditions in three successive loading steps. No cracks were observed but reduction of natural frequencies and stiffness of the arch was experimentally documented. The stiffness was evaluated in a non-destructive test using an impact hammer and only two accelerometers. The proposed identification technique based
Bayer, J. (Jan)   +2 more
openaire   +2 more sources

"Mechanical properties and hyperelastic constitutive model of microporous rubber"

open access: yesHecheng xiangjiao gongye, 2023
Based on the uniaxial tensile and compression tests of the microporous rubber material, the superelastic constitutive model was used to fit the test data, and the accuracy evaluation method was used to assess the fitting effect.
"SUN Bao-long1 a, CHEN Jian-gang1 a, TIAN Kan-liang1 b, ZHANG Fan1 a, ZHOU Jiong-hao2, NIU Wen-qiang2, ZHANG Hui-li1 a"
doaj   +1 more source

Relationship between Static Stiffness and Modal Stiffness of Structures

open access: yesIPTEK The Journal for Technology and Science, 2010
This paper derives the relationship between the static stiffness and modal stiffness of a structure. The static stiffness and modal stiffness are two important concepts in both structural statics and dynamics. Although both stiffnesses indicate the capacity of the structure to resist deformation, they are obtained using different methods. The former is
Endah Wahyuni, Tianjian Ji Tianjian Ji
openaire   +4 more sources

Experimental Study of the Nonlinear Behaviour of Deep-Sea Mooring Polyester Fibre Ropes

open access: yesPolish Maritime Research, 2023
Mooring ropes are essential components of ships and offshore floating structures and they are subjected to cyclic axial loads. This study investigates the evolution of the full-cycle stiffness of fibre polyester ropes under long-term static and dynamic ...
Zhang He   +5 more
doaj   +1 more source

Stiffness Analysis of Parallel Cable-Driven Upper Limb Rehabilitation Robot

open access: yesMicromachines, 2022
This paper studies the stiffness of the parallel cable-driven upper limb rehabilitation robot (PCUR). Firstly, it was derived that the static stiffness expression of the PCUR was composed of platform pose stiffness KT and cable pose stiffness KS.
Yupeng Zou   +5 more
doaj   +1 more source

Effect of Hybrid Modification and Type of Compaction on the Cracking Properties of Asphalt Concrete

open access: yesمجلة النهرين للعلوم الهندسية, 2020
This paper focused on evaluating the effect of aggregate gradation and polymer modification on indirect tensile strength (ITS) and the static stiffness for hot asphalt mixtures.
Mohammed A. Abed, Alaa H. Abed
doaj   +1 more source

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