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Simulações – parte 01
No post “Simulações – Primeiros números” vimos que necessitamos verificar se os componentes projetados para o H45 irão suportar os esforços mecânicos a que foram destinados.
Essa fase é um pouco mais lenta em sua progressão por que as simulações são cálculos complexos de engenharia e que exige bastante de processamento de computação.
Para o sistema de “tilt” dos motores faremos os seguintes testes:
. Carga estática e dinâmica;
. Cargas de 9.8, 19.6 e 39.2 N;
. Carga a 0, 45, 90, 135 e 180 graus;
Segue os resultados:
> Carga Estática :: tração :: 90 graus
> Peça 01
Na imagem é mostrado o resultado do “stress” sofrido pela peça quando submetido a uma carga de 9.8N.
Como podemos notar o valor na escala von Mises é de 18.5403 kgf/cmˆ2 , muito inferior ao Yield Strength de 316 kgf/cmˆ2 referente ao material que escolhemos para fabricar as peças o plástico ABS.
Aumentamos a carga e obtemos na escala:
> carga 16.9N :: 67.5519 kgf/cmˆ2;
> carga 39.2N :: 139.3372 kgf/cmˆ2.
Concluímos que para a peça 01 podemos triplicar a carga nominal do projeto que não teremos nenhum problema ao stress mecânico.
> Peça 02
> carga 9.8N :: 12.9663 kgf/cmˆ2;
> carga 16.9N :: 25.0582 kgf/cmˆ2;
> carga 39.2N :: 51.7783 kgf/cmˆ2.
> Peça 03
> carga 9.8N :: 20.2999 kgf/cmˆ2;
> carga 16.9N :: 39 kgf/cmˆ2;
> carga 39.2N :: 80.5687 kgf/cmˆ2.
> Peça 04
> carga 9.8N :: 55.2173 kgf/cmˆ2;
> carga 16.9N :: 125.393 kgf/cmˆ2;
> carga 39.2N :: 258.864 kgf/cmˆ2.
> Peça 05
> carga 9.8N :: 15.0327 kgf/cmˆ2;
> carga 16.9N :: 28.0324 kgf/cmˆ2;
> carga 39.2N :: 58.3904 kgf/cmˆ2.
Podemos observar que as peças do sistema de “tilt” do H45 suportam cargas de tração (vertical // 90 graus) de 39.2N sem apresentarem grandes problemas de stress mecânico. Verificamos que a peça 04 foi que apresentou os maiores valores e por isso devemos ficar mais atentos a mesma.
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