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Abstract(s)
Nas últimas décadas tem crescido a necessidade de medir forças de arrasto hi-drodinâmicas. Assim, neste trabalho desenvolveu-se e construiu-se uma célula de carga para a medição de forças de arrasto hidrodinâmicas até 500 N. Com base em expressões analíticas determinou-se as dimensões e geometria do corpo da célula (tipo Z). A geo-metria obtida foi analisada com o recurso ao método dos elementos finitos, permitindo otimizar a seleção do material e dimensões da estrutura. Posteriormente, foi fabricado, com processos de maquinagem, o corpo da célula de carga e foram colados extensóme-tros resistivos em posições previamente definidas na simulação numérica. Após a fabri-cação da célula de carga efetuou-se a sua calibração, bem como, a sua caracterização.
Palavras-Chave:
In recent decades, the need to measure hydrodynamic drag forces has grown. Thus, in this work a load cell was developed and built to measure hydrodynamic drag forces up to 500 N. Based on analytical expressions, the dimensions and geometry of the cell body (type Z) were determined. The geometry obtained was analyzed using the finite element method, allowing to optimize the selection of material and dimensions of the structure. Subsequently, the body of the load cell was manufactured using machining pro-cesses and resistive strain gauges were glued in previously defined positions in the nu-merical simulation. After manufacturing the load cell, its calibration was carried out, as well as its characterization.
In recent decades, the need to measure hydrodynamic drag forces has grown. Thus, in this work a load cell was developed and built to measure hydrodynamic drag forces up to 500 N. Based on analytical expressions, the dimensions and geometry of the cell body (type Z) were determined. The geometry obtained was analyzed using the finite element method, allowing to optimize the selection of material and dimensions of the structure. Subsequently, the body of the load cell was manufactured using machining pro-cesses and resistive strain gauges were glued in previously defined positions in the nu-merical simulation. After manufacturing the load cell, its calibration was carried out, as well as its characterization.
Description
Keywords
Forças de arrasto Célula de carga Extensómetros elétricos Calibração