This free online frame calculator will generate and find the bending moment and shear force diagrams of a 2D frame structure. RICHARD TONER has spent entire days giving a truck-frame seminar for the National Truck Equipment Association. We do not have any affiliation with any OEMs and do not have access to any of their specifications for truck frames or any other components. There are many grades of steel in the marketplace. It is important to choose the right grade to achieve the proper RBM for your truck. Every material has a yield strength that can be mathematically defined. The formula: Section Modulus x Yield Strength = RBM. We can assist in calculating the RBM of your truck frame(s).
All design, engineering, material selection, and final use of the fabricated product(s) are the responsibility of the customer. Resistance bending moment (RBM). He knows that much about truck frames.. Toner, president of Toner & Associates (Pentwater, Michigan) and the NTEA's first staff engineer, said the frame is “the backbone of the truck” because “it carries the loads we put on trucks.” This calculation combines section modulus and yield strength and seems a fair and accurate measure when comparing frame strengths between truck manufacturers. For a side rail, the yield strength is the ability of the metal to return to its original shape after removal of a maximum load. The free version allows you to input frames with a maximum of 3 members with applied point loads and moments for 2D frame analysis. RBM is calculated by using the section modulus number and multiplying it by the known yield strength. Our truck frames are fabricated strictly from hi-tensile steel.