Optimizing the Design of Connecting Rod under Static and Fatigue Loading
The main objective of this work is to re-optimize the existing design of connecting rod of universal tractor (U650) by changing some of the design variables. The existing design performs modelling and evaluates critical regions in the connecting rod under fatigue loading. In the present work, the model is developed, analyzed and designed using CATIA 19, PRO-E and ANSYS workbench v12. Optimization of connecting rod is done under same boundary and loading conditions for variation in the few stress and fatigue parameters i.e. stresses, weight, life, damage, bi-axiality indication and safety factor. The allowable numbers of cycles under fully reversed fatigue loading are increased and assumed up to a maximum limit of 10 cycles. Stress concentration coefficient is varied to obtain the maximum cycles condition. The critical regions under both static and fatigue analysis are identified and improved. The connecting rod is modelled and optimized for the reduced weight, improved life and manufacturability. The results obtained from performed analysis can be used to modify the design of existing connecting rod, so that better performance i.e. reduced inertia, fatigue life and manufacturability can be obtained under varying static and fatigue conditions.
2395-1621 Finite Element Analysis and Optimization of Diesel Engine Connecting Rod
ARTICLE INFO The automobile engine connecting rod is a high volume production component. It undergoes high cyclic loads of order which range 10 8 to 10 9 cycles from high compressive loads due to combustion, to high tensile loads due to inertia. It connects reciprocating piston to rotating crankshaft, transmitting the thrust of the piston to the crankshaft. Every vehicle that uses an internal combustion engine requires at least one connecting rod depending upon the number of cylinders. Connecting rods for automotive applications were typically manufactured by various manufacturing process like by forging from either wrought steel or powdered metal. They could also be cast, but castings could have blown-holes which are critical from durability and fatigue points of view. Forgings produce blow-hole-free and better rods gives them an advantage over cast rods. But between the forging processes, powder forged or drop forged, each process has its own pros and cons. So in order to reduce the material cost and thus production cost it is better to optimize the weight or volume. This project entitled weight optimization process through Ansys software. In this with the help of generate code through Ansys API, we run the test to achieve the optimized weight condition of diesel engine connecting rod. It achieve saving in material, weight and cost for manufacturing diesel engine connecting rod. Keywords— Ansys, Connecting Rod, Cost, Optimize, Weight. Article History Received :18 th November 2015 Received in revised form :
ANALYSIS OF BOLT′S ANCHORING QUALITY BASED ON WAVELET NEURAL NETWORK
The dynamic response of bolt achieved by impact-echo method can be effected easily by some factors.It′s difficult to classify bolt′s anchoring quality according to the dynamic response of bolt.In this paper,a new analytical method of bolt′s dynamic response is put forward.The new analytical method combing with advantages of wavelet analysis and artificial neural network is presented.Firstly,the dynamic response of bolt by numerical simulation software FLAC3D is obtained.Secondlyt,he features are extracted from the dynamic response of bolt by wavelet analysis.Thirdlyt,hese features are fed into the artificial neural network for training.Finallyt,his artificial neural network to classify the bolt′s anchoring quality intelligent according to the dynamic response of bolt is employed.In order to validate this new analytical method,some practical signals of bolt′s dynamic response are used for the test.The results indicate that the new analytical method is practicable.