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It is a very crucial component as it decides how your vehicle will perform on the road. #Vehicle dynamics calculator driverBasically, a Gear Reduction System functions as a mechanism which assists in changing the torque and velocity of the vehicle according to the demanding conditions either by the driver as in the case of the manual gearbox or automatically as in the case of automatic transmission and CVT. Good evening guys once again in the previous post I have written about Transmission basics and working and now in this post, one of the component parts of the transmission will be discussed i.e. #Vehicle dynamics calculator freeAnd if you have any complaints, suggestions, query or just simply want me to write something please feel free to use the comment box. ![]() #Vehicle dynamics calculator plusIf you do like my post click on like and share plus you could follow my blog on my official website or on quora through. Thank you, everyone, for reading the post. ![]() Thus an optimum length has to be obtained. So, actually this procedure is used to find out what maximum length we could keep in our design but the general length of suspension arms depends on upon various factors which is needed to optimise. But one thing to remember is longer the suspension arms more space it would take and more would be your turning radius as they would be directly affecting your wheelbase or wheel track. Thus we obtained 392 mm as maximum length we could use in our suspension arms. To find out the maximum length I could use I use above-given formula’s step by step. Suppose I want to use a mild steel circular pipe of diameter 29mm and thickness 1.65 mm for my design and the maximum spring force is 1500 N and reaction on the wheel are 1050 N. Let me give a situation to you and find a maximum length of suspension arm we could keep in the vehicle. This gives us the maximum length of the beam we could use as suspension arms. (P-W)d1=M where P is the spring force and W is the Reaction of the wheels So, using above equation we find out maximum Moment a beam could bear. I=π(d0^4-di^4)/64 for circular beam where d0= outer diameter of the beam and di=inner diameter of the beam I= bd^3/12 for rectangular beam where b=breadth of the beam and d= depth of the beam If you do like my post click on like and share plus you could follow my blog on my official website or on quora through . Step-5 Spring Rate= Spring Force/ Initial compression = 1064/(1.5*25.4)= 27 N/mm Initial compression = 30% of spring Travel = 0.30*5= 1.5 in Step-4 Wheel Travel*MR= Travel of the springs Step-3 Spring force= Vertical Spring Force/ACF Step-2 Vertical Spring Force=Wheel force/MR Therefore Wheel force= (40% of 250*10)/2 (divide by 2 as front axle as 2 wheels) Let me give you a situation to explain more suppose we want to find out spring rate for front wheel of a vehicle of mass 250 kg and weight distribution as 40-60 with a wheel travel of 10in and Motion ratio of 0.5 and spring mounted at an angle of 20 deg so we would be finding it out as follow: So, to find out the actual spring force required we divide vertical spring force by an angle correction factor (ACF). This is the spring force you have to find out for a pure vertical spring arrangement but normally in vehicle springs are attached at an angle to the vertical which alters the force of the spring. Once weight on wheel is determined, find the force on the spring given by the formula So, for this first thing you should know that how much force will be acting on your individual wheels this could be determined by vehicle your vehicle weight on machine which would give you result for individual wheels or if you know the total weight and position of centre of gravity you could find out weight on individual wheels by distributing weight appropriately. So, now as you have knowledge about motion ratio I can start with the determination of spring rate of the vehicle. Following formulas are used to determine the relation between forces/travel of wheel and spring. ![]() Spring travel is defined as the amount by which a spring would compress totally upon the action of forces. ![]()
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