Study on Solidification Behavior of Aluminium alloy ( LM 6 ) Castings by using Computer aided Simulation software
Method layout of a casting is an important aspect of tooling development. It involves decisions regarding part orientation in mould, parting line, cores, cavity layout, feeders, neck and gating system. An improper method layout leads either poor quality or low yield, which affects the productivity. Method design is mostly carried out manually, using 2D drawing of the cast part. Then tooling is fabricated the sample castings are produced to 3-4 trials which involves lot of production cost in the from of wastage of manpower, time and hamper the day to day schedule of the particular production. Computer simulation provides a clear insight regarding the location and extent of internal defects, ensuring casting are right as first time and every time. In the present study plate castings were considered to study the solidification behavior of Aluminium Alloy (LM6) at different sizes of riser and riser neck. The VEM based casting simulation software is used to study the solidification behavior of above castings. The simulated results were compared with the experimental results. It is expected that this work will be of immense importance equally to the academicians as well as to the industrial methoding engineers.
Computer aided design and analysis
Descriptions of several digital computer programs for electronic circuit analyses are given. A listing of a special-purpose (Class "C" amplifier design) program is given. Comparisons of several general purpose programs are made. An extensive description of the CADLIB is included. The discussion of the CADLIB points out numerous modifications to the general purpose programs. These modifications include such things as the addition of printer-plots, more accurate algorithms, etc. Also many of the problems encountered in adapting the various programs to the NPGS machine (IBM 360 model 67) are enumerated. Appendicies are included to provide a reference for coding the members of the CADLIB for which no instruction manual was avail. able. An extensive bibliography on applied computer aided design and the job control language details of how the CADLIB was created are included. In addition two extensive examples using the CADLIB are
Computer Programs for Antenna Feed System Design and Analysis. Volume I - Programs and Sample Cases
Fourteen computer programs have been developed for antenna feed system design and analysis. The programs cover a large spectrum of feed design problems, from primary feed pattern synthesis to the farfield pattern of the main reflector, including analyses of structural distortions.