نتایج جستجو برای: mechanical system representation

تعداد نتایج: 2595151  

In this paper, a generalized particle system (GPS) method, a general method to describe multiple strong form representation based particle methods is described. Gradient, divergence, and Laplacian operators used in various strong form based particle method such as moving particle semi-implicit (MPS) method, smooth particle hydrodynamics (SPH), and peridynamics, can be described by the GPS metho...

Journal: :علوم و تکنولوژی پلیمر 0
محمدرضا عرب بافرانی تهران، دانشگاه تربیت مدرس، دانشکده مهندسی شیمی، بخش مهندسی پلیمر، صندوق پستی 114-14115 مهدی رزاقی کاشانی تهران، دانشگاه تربیت مدرس، دانشکده مهندسی شیمی، بخش مهندسی پلیمر، صندوق پستی 114-14115

one of the most important factors that affect tire friction is surface roughness, which determines the size of the real contact area, real pressure distribution on the contact interface, and scales of mechanical engagement between viscoelastic rubber and a rough substrate. the need to predict coefficient of friction (cof) for rubber on rough surfaces for applications such as traction of tires o...

Journal: :مهندسی بیوسیستم ایران 0
نوروز مراد اصغرلو دکتر دانشگاه آزاد واحد علوم و تحقیقات سعید مینایی دانشیار، دانشگاه تربیت مدرس رضا علیمردانی ، دانشیار، دانشگاه تهران علی محمد برقعی استاد، دانشگاه آزاد، واحد علوم و تحقیقات تهران فرخ درویش استاد، دانشگاه آزاد، واحد علوم و تحقیقات تهران

performances of electronic and mechanical draft control systems on a mf399 tractor were the objectives of the study to be evaluated and compared under field conditions. hence, the effects of two draft control systems (mechanical and electronic) under four ground speed levels and three set values of draft levels on rear wheel slippage, fuel consumption, compressive force within the top link and ...

Journal: :iranian journal of science and technology (sciences) 2010
a. neamaty

in this paper, we investigate the canonical property of solutions of a system of differentialequations having a singularity and turning point of even order. first, by a replacement, we transform thesystem to the sturm-liouville equation with a turning point. using the asymptotic estimates for a specialfundamental system of solutions of sturm-liouville equation, we study the infinite product rep...

In this paper, we study an (n-k+1)-out-of-n system by adopting their components to be statistically independent though nonidentically distributed. By assuming that at least m components at a fixed time have failed while the system is still working, we obtain the mixture representation of survival function for a quantity called the conditional inactivity time of failed components in the system. ...

Some near-regular mechanical systems involve global deviations from their corresponding regular system. Despite extensive research on vibration analysis (eigensolution) of regular and local near-regular mechanical systems, the literature on vibration analysis of global near-regular mechanical systems is scant. In this paper, a method for vibration analysis of such systems was developed using Kr...

2008

In this paper we discuss the design of a hydraulic-mechanical loadsensing system using modelling and simulation in an intelligent programming environment. The approach is based on using multi-pole models and signal-flow graphs of functional elements, enabling methodical, graphical representation of mathematical models of large and sophisticated fluid power systems. Modelling and simulation of s...

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