From the initial product design stage, we use FEM in verifying product strength, rigidity, and vibration characteristics and improving products. Thus, we secure the validity of product designs, and simultaneously cut product development periods and costs. We apply structural analysis technologies in designing excavator frames and booms, wheel loader frames and boom linkages, forklift frames, engine parts, and machine tool bodies.
For engine analysis, we have developed analysis technologies in various fields including combustion, thermal flow, structure, dynamics, fatigue, noise and vibration. In the first engine development stage, we analyze engine assembly using a combination of such developed technologies. We currently focus on optimizing designs for next-generation tier 4 engines with a view to enhancement of engines in response to emission regulations.
As an improvement on the past method of testing strain and evaluating product fatigue life, we apply a short-term analysis evaluation method. We utilize load history, product shape, and material fatigue characteristics to forecast fatigue life. We are recently developing techniques designed to evaluate the fatigue life of excavator welding areas.
To enhance product efficiency and cut costs, we conduct topology optimization in the initial design stage and set the basic design direction. With the progress of design, we optimize shape and size and analyze sensitivity, thus determining detailed design plans. In this way, we endeavor to optimize our product designs. We conduct research on technologies designed to improve machine tool dynamic stiffness and achieve designs for lightweight products. To enhance engine efficiency, we research on part shapes.
The technologies are designed to measure and visualize noise and vibration using various analysis devices. In the vibration field, we use mode analysis and ODS (Operational Deflection Shape) analysis technologies. In the noise field, to visualize acoustic field, we utilize acoustic cameras or sound intensity analysis technologies.
We are developing technologies to reproduce the interaction of equipment and objects of work (soil, gravel, etc.) using DEM (Discrete Element Method) and to forecast load acting on equipment. These technologies enable us to produce technical data necessary for the designs of hydraulic systems and structures associated with the operation of equipment in the analysis environment.