Accurate and precise attempts were taken to study the affect of important machining variables on performance characteristics in turning of AISI H13 using ceramic tool. A three dimensional machining model using DEFORM 3D, a FEM based software were used for predicting the cutting forces, temperature etc by Langrangian model. The results obtained from simulation are compared with experimental results and are found in good accord. A novel model has been developed for the prediction of cutting forces based on cutting speed, feed and depth of cut and will be valid for turning of AISI H13 using ceramic tool. Apart from this simulation shows distribution of contact temperature, stress, strain and strain rate in tool and workpiece. These results may be useful for tool developers for complete understanding without performing costly and time consuming experimentation.