دراسة تأثير عامل التخميد في التحليل الديناميكي لاهتزاز كاتمة صوت غاز العادم : دراسة مقارنة

Abstract EN

This work give a spot light on the effect of the presence of damper on the analysis of the vibration behavior of exhaust gas silencer with other bearing without damper.

Transfer matrix method is adopted to simulate the effect of vibration of the silencer .

The system is assumed to be made up of two simple beams connected together by number of sprigs once and (springs and dampers) at other time to campier the results of system (shift- casing - bearings) .The search assumed that (pressure, temperature, velocity) are only in axial direction and Mach number constant from inside and outside the shift.A Fortran (77) language computer program has been built to take the theoretical side and used to study the other effect which related with silencer design or exhaust gas properties has been calculated in sprite program and considered as input data in the main program.

The first three natural frequencies has been calculated for node (4) and the results show that dampers presents help absorbing parts of vibration asa result give less value of natural frequencies and eigen(dsiplacement,slope, shear force , bending moments) mode capered with those which calculated without dampers as shown in results and charts.And to confirmation of result good agreement found when a comparison took place with the values calculated without damper in this research and previous study as shown latter .