Recently standard wiper blades have been gradually replaced by flat wiper blades due to several advantages such as simple structures. A schematic approach is developed to appraise the suitability of the geometry of a metallic beam, one of major components of the flat wipe blade, in the present study. The beam is compressed against a level surface via a rocker arm mechanism, and the corresponding pressure distribution under the beam is measured by using piezoelectric sensors. Pressure distributions along the longitudinal direction of the beam based on the numerical simulations are in good agreement with those based on the experiments. A parameterized beam model is proposed here to achieve anticipated characteristics of the pressure distributions of the beam provided. Three geometric parameters built in a computer-aided drawing (CAD) model are investigated to evaluate their influences on the pressure distributions of the beam. An optimization software linked to CAD software and a finite element analysis software is further adopted based on various self-defined optimization indexes to search for an ideal parameter combinations. The suggested geometry of the beam is then sampled to validate the appropriateness of the current pressure assessment procedures.