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Calculation of contact forces

G. Hotz, A. Kerzmann, C. Lennerz, R. Schmid, E. Schömer, T. Warken
1999 Proceedings of the ACM symposium on Virtual reality software and technology - VRST '99  
This paper presents new algorithms for the calculation of contact forces in multi-body systems with unilateral contacts.  ...  Detecting collisions and calculating physically correct collision responses play an important role when simulating the dynamics of colliding rigid bodies.  ...  Calculation of contact forces Physically accurate models for the determination of contact forces use a complementarity formulation, which reflects the unilateral nature of the contacts [2, 5, 1, 3, 4]  ... 
doi:10.1145/323663.323701 dblp:conf/vrst/HotzKLSSW99 fatcat:cbco3s3r3jg2vhift6twtt44ju

The calculation of a normal force between multiparticle contacts using fractional operators [article]

Leszczynski Jacek
2002 arXiv   pre-print
This paper deals with the complex problem of how to simulate multiparticle contacts. The collision process is responsible for the transfer and dissipation of energy in granular media.  ...  A novel model of the interaction force between particles has been proposed and tested. Such model allows us to simulate multiparticle collisions and granular cohesion dynamics.  ...  In literature [6] notices the lack of energy dissipation in molecular dynamics models. We will propose novel form of a force between contacting particles and we will investigate its properties.  ... 
arXiv:physics/0209085v1 fatcat:6vw6hlnktzgdhgpkj3ljzkn6hi

Calculation of locomotive traction force in transient rolling contact

Petr Voltr
2017 Applied and Computational Mechanics  
The simplified model of transient rolling, which involves calculation of the stress distribution in the discretised contact area, overcomes this disadvantage but might be unnecessarily complex for more  ...  To represent the wheel-rail contact in numerical simulations of rail vehicles, simplified models (Fastsim, Polách etc.) are usually employed.  ...  Acknowledgements The research was supported by Competence Center of Rail Vehicles, project No. TE01020038, Technology Agency of the Czech Republic.  ... 
doi:10.24132/acm.2017.335 fatcat:2ggfveuervc47oejbtjmn4scz4

The Calculation of the Contact Force and the Contact Width of Shaft Seals

Peter Šlesar, Roland Jančo
2019 Journal of Mechanical Engineering  
The largest radial deviation of the shaft was applied in final seal analysis where the contact pressure changes on the individual tongues of the seal were recorded.  ...  The aim of the article is to point out the sealing efficiency of the two-language seal of the water pump bearing when radially deflecting the shaft within radial clearance.  ...  ACKNOWLEDGEMENTS The paper was supported by the grant from KEGA no. 017STU-4/2018 entitled "Theoretical and Practical Solution of Structures on Elastic Linear and Nonlinear Foundation".  ... 
doi:10.2478/scjme-2019-0010 fatcat:so2w3e57r5bzbmvronvuey6rum

The calculation of a normal force between multiparticle contacts using fractional operators [chapter]

J LESZCZYNSKI
2003 Computational Fluid and Solid Mechanics 2003  
This paper deals with the complex problem of how to simulate multiparticle contacts. The collision process is responsible for the transfer and dissipation of energy in granular media.  ...  A novel model of the interaction force between particles has been proposed and tested. Such model allows us to simulate multiparticle collisions and granular cohesion dynamics.  ...  Temporary index W denotes a particle contacting with the given particle X and Y à ) is a total number of particles surrounding and contacting with the particle proposed the force being a linear combination  ... 
doi:10.1016/b978-008044046-0/50501-7 fatcat:nbwqhjndwnh4lcq3z2ebwnnve4

The calculation of a normal force between multiparticle contacts using fractional operators [chapter]

J.S. Leszczynski
2003 Computational Fluid and Solid Mechanics 2003  
This paper deals with the complex problem of how to simulate multiparticle contacts. The collision process is responsible for the transfer and dissipation of energy in granular media.  ...  A novel model of the interaction force between particles has been proposed and tested. Such model allows us to simulate multiparticle collisions and granular cohesion dynamics.  ...  Temporary index W denotes a particle contacting with the given particle X and Y à ) is a total number of particles surrounding and contacting with the particle proposed the force being a linear combination  ... 
doi:10.1016/b978-008044046-0.50501-7 fatcat:buueyoophzcapp2icqfftybpeu

Improvement of Contact Force Calculation Model Considering Influence of Yield Strength on Coefficient of Restitution

Xichun Liu, Wei Chen, Hu Shi
2022 Energies  
As an important parameter for energy loss and material deformation prediction during collision, the coefficient of restitution has an important influence on the accurate calculation of contact force.  ...  At the same time, the article compares the new coefficient of restitution model with the constant coefficient of restitution model, and further studies the effect of the coefficient of restitution on the  ...  The researchers first took the Hertz model as the starting point of the contact force model, and calculated the contact force of the elastic body based on the theory of elastic mechanics and continuum  ... 
doi:10.3390/en15031041 fatcat:kyxwhm3oifd6hmlnh57quuz44q

Contact Point Calculation on a Haptic Interface Utilizing Differentiated Force

Hiroyuki Kitamura, Sho Sakaino, Toshiaki Tsuji
2017 IEEJ Journal of Industry Applications  
However this technique has low contact point accuracy when the external force is small. Hence, this paper proposes the use of differentiated force information to calculate an accurate contact point.  ...  In the experiment, the accuracy of the contact point calculation using the differentiated force information was higher than the one using the force information when the external force was small.  ...  Contact Point Calculation using Differentiated Force Information There is the error of the calculated contact point in the conventional method when the force is small, as shown in Section 3.1.  ... 
doi:10.1541/ieejjia.6.151 fatcat:cj5skh3lafcbbaxq3ow2l5kmt4

CALCULATION OF ADDITIONAL AXIAL FORCE OF ANGULAR-CONTACT BALL BEARINGS IN ROTOR SYSTEM

Zhenhuan Ye, Zhansheng Liu, Liqin Wang
2016 Transactions of the Canadian Society for Mechanical Engineering  
Based on a loading-deformation relationship of bearing elements and the coordination of displacement between bearings in the rotor system, a model for calculating the additional axial force of angular-contact  ...  A pair of 276927NK1W1(H) angular-contact ball bearings in symmetry in the single-rotor system is used as the example, calculation results of the additional axial force of bearings from the model in this  ...  ACKNOWLEDGEMENTS The work has received support from the National Natural Science Foundation of China (51375108), Science and Technology Foundation of GuiZhou Province of China (Qian Ke He J Zi [2014]2172  ... 
doi:10.1139/tcsme-2016-0046 fatcat:jyqf6lqdpbaoph52arcpyzqyve

DESIGN OF A CALCULATION FEM MODEL OF THE TEST STATIC STAND OF PIPE CONVEYOR FOR ANALYSIS OF CONTACT FORCES

Gabriel Fedorko, Vieroslav Molnar
2017 Advances in Science and Technology Research Journal  
Experimental research in the field of pipe conveyors is a difficult matter and yet necessary in order to answer the questions regarding the motion resistances and contact resistances of pipe conveyors,  ...  The main task of this paper is to assess the creation of a suitable simulation model of the test set-up for a specified pipe conveyor developed with regard to realisation of the FEM analyses, using the  ...  Acknowledgements This work is a part of the following projects VEGA 1/0063/16, KEGA 014STU-4/2015, KEGA 018TUKE-4/2016.  ... 
doi:10.12913/22998624/71268 fatcat:5pxwyxzyyzatrmmrunl6t3oene

On the choice of contact parameters for the forced response calculation of a bladed disk with underplatform dampers

Chiara Gastaldi, Emanuele Grossi, Teresa M. Berruti
2017 Journal of the Global Power and Propulsion Society  
by the comparison of the calculated and experimental forced response of the bladed disk.  ...  The forced response of the bladed disk is not used as a mean to tune the contact parameters, but rather as a validation tool: the effect of the different choices of contact parameters in the code is highlighted  ...  The calculation with the UPDs requires the selection of contact nodes to which macroslip elements (contact forces) are applied.  ... 
doi:10.22261/5d19rh fatcat:yv2jpybxijbojkl7urea5p5deu

3P180 Calculation of potential of mean force between actin molecules making contact through excluded volume effect
3P180 近接するアクチン分子間に働く排除体積起因平均力の計算(分子モーター))

Y. Shimada, M. Irisa
2005 Seibutsu Butsuri  
Sh血 ada , M . lriSa: CalcUlation of potentia1 of mean foree between actin 皿 01ecUles maldng 52 ≧ 1・ 豆 、 宣 S°・ 5 。  ...  contact through excluded volu 皿 e effeet 一 S248 _ N 工 工 一 Eleotronio Library  ... 
doi:10.2142/biophys.45.s248_4 fatcat:ghan7cfk45cnxoktl34nnryvjy

Numerical Calculation of Contact Force on Structure and Movement of Sea Ice in Lake Saloma

Shinji KIOKA, Takaharu KAWAI, Takahiro TAKEUCHI, Yoshimi MAKITA
2010 Journal of Japan Society of Civil Engineers Ser B2 (Coastal Engineering)  
The numerical calculation results not only agreed well with the observation results regarding the static/dynamic contact forces, but they were also able to estimate or interpret the interaction forms and  ...  The validity of the numerical method was made by comparison with observation results concerning contact forces by load cells embedded in the channel wall in the 2nd entrance of Lake Saloma.  ...  of Contact Force on Structure and Movement of Sea Ice in Lake Saloma Shinji KIOKA, Takaharu KAWAI, Takahiro TAKEUCHI and Yoshimi MAKITA  ... 
doi:10.2208/kaigan.66.786 fatcat:bx4ffubpfjgdxkektqtov6xsqy

Atomic force microscope measurements andLCAO−S2 + vdW calculations of contact length between a carbon nanotube and a graphene surface

M. Seydou, Y. J. Dappe, S. Marsaudon, J.-P. Aimé, X. Bouju, A.-M. Bonnot
2011 Physical Review B  
Atomic force microscope measurement and LCAO-S-2+vdW calculations of contact length between a carbon nanotube and a graphene surface.  ...  Experimental and theoretical results are in good agreement, which allows us to deduce the contact length of the tube on the surface.  ...  We now present the results of the LCAO-S 2 + vdW calculations giving in a very accurate way the contact length of the various SWCNT's on the graphene surface.  ... 
doi:10.1103/physrevb.83.045410 fatcat:e6j75xej3vcx7ghcqqqwlefn6q

Study on influences of brake force distribution to vehicle motions (Numerical calculation of pitch motion and contact forces, and the comparison with experimental results)
制動力配分が車の運動に与える影響に関する研究(ピッチ運動と接地荷重の数値計算およびその実測値との比較)

Ryoichi KURASAKO, Goro OBINATA, Kazufumi TORIYA
2014 Transactions of the JSME (in Japanese)  
Appropriate relation among the inertia, suspension characteristics and brake force distribution will be required for achieving comfortable motion of vehicle and stable contact forces at braking.  ...  Then, we analyze by using the proposed model, how the brake force distribution influences the vehicle vertical and pitch motion, and contact forces at side view.  ...  Fig. 14 Calculation results of maximum contact force of front and rear. There are extreme values of contact forces where the distribution of front brake force is around 0.82.  ... 
doi:10.1299/transjsme.2014dr0261 fatcat:7whl3z6pv5hinftrkxsb7f4wtq
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