finite element analysis of a metalic structure

I need to perform a finite element analysis of a mechanical structure, composed of steel profiles and welded components. The analysis needs to be detailed with a fine-mesh, and accommodate certain pre-specified requirements and parameters. The results of this analysis will be integral in informing the design of this metallic structure, helping me ensure that it meets my needs in terms of performance. It is therefore essential that this job is completed to a high standard and with a degree of precision.