20.500.12556/DKUM-66825 Probabilistic behaviour of joints on joint forces in mechanisms Probabilističko ponašanje spojeva na spojnim silama mehanizama This paper discusses the influence of the clearance in joints on the joint reaction forces in mechanisms. By using mathematical programming, the optimal parameters of kinematic chains can be efficiently obtained by using the deterministic approach. However, the situation becomes more sophisticated if random effects of tolerances of the arm lengths and the random pin positions have to be considered. In this work the influence of clearances on joint forces is calculated by using the Taylor approximation and the Monte Carlo method. The implementation of the model is illustrated with two examples. The first example considers a closed loop chain, representing a four-bar mechanism being an actual part of a hydraulic support, employed in mining industry. The second example considers joint reaction forces of car wiper mechanism. U radu se razmatra utjecaj zračnosti u spojevima na reakcijske sile spoja u mehanizmima. Pomoću matematičkog programiranja, uspješno se mogu dobiti optimalni parametri kinematičkih lanaca primjenom determinističkog pristupa. Međutim, situacija postaje složenija ako se moraju uzeti u obzir slučajni učinci tolerancije dužine poluge (kraka) i slučajni položaji svornjaka. U ovom se radu utjecaj zračnosti na spojne sile izračunao pomoću Taylor aproksimacije i Monte Carlo metode. Implementacija modela ilustrirana je na dva primjera. Prvi primjer razmatra lanac zatvorene petlje, predstavljajući mehanizam s četiri šipke kao sastavnog dijela hidrauličkog nosača, korištenog u rudarstvu. Drugi primjer razmatra reaktivne sile spoja u mehanizmu automobilskog brisača. joint forces kinematic chain mathematical programming stochastic model kinematične verige matematično programiranje stohastično modeliranje true false true Angleški jezik Hrvaški jezik Znanstveno delo 2017-07-12 09:36:43 2017-07-12 09:37:24 2022-08-01 13:12:56 2019-07-11 16:00:10 2015 0 0 str. 113-117 št. 1 Letn. 22 Jan./Feb. 2015 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1330-3651 620.172.2 15346181 18547734 10.17559/TV-20131023220214 1330-3651 URN:SI:UM:DK:K5L96OWN Tehnicki_vjesnik_2015_Harl_Probabilistic_behaviour_of_joints_on_joint_forces_in_mechanisms.pdf Tehnicki_vjesnik_2015_Harl_Probabilistic_behaviour_of_joints_on_joint_forces_in_mechanisms.pdf 1 2DC786CED38B55789A6CE6A24C1E355F f08f169e718331b48d8d68fae02d37b4971e15deed631af30c279bff033889fd 66dd4d49-7c0e-11eb-bb7a-00155d0001ca 20.500.12556/dkum/4c27da8f-d899-491c-8008-e68824d9f556 https://dk.um.si/Dokument.php?lang=slv&id=114063 http://hrcak.srce.hr/135071 1 https://dk.um.si/Dokument.php?lang=slv&id=114062 Fakulteta za strojništvo 0 0 0