I have done lots of work in this area - skidder booms, telehandler booms, excavator booms, mining cars, rough terrain forklifts, front end loader lift mechansims & structures, etc.What do you need? My email is firstname.lastname@example.org.Feel free to drop me a note.
I look forward project for strength calculations of excavator from one company in Bulgaria. I will have meeting with the company in Saturday or Monday. When there are more clarity about the project I will write again to your e-mail. My e-mail is: email@example.com
About the metal construction see: https://forum.solidworks.com/message/262946#262946
Thanks in advance.