Consider the printed circuit board (PCB) mounted on a cantilevered aluminum bracket shown in Fig. 4.23(a). Design the bracket to withstand an acceleration level of \(100 \mathrm{~g}\) under the triangular pulse shown in Fig. 4.67. Assume the material properties as given in Problem 4.53.

Data From Problem 4.53:-

Consider the printed circuit board (PCB) mounted on a cantilevered aluminum bracket shown in Fig. 4.23(a). Design the bracket to withstand an acceleration level of \(100 g\) under the rectangular pulse shown in Fig. 4.66. Assume the specific weight, Young's modulus, and permissible stress of aluminum as \(30 \mathrm{kN} / \mathrm{m}^{3}, 70 \mathrm{GPa}\), and \(180 \mathrm{MPa}\), respectively.

Transcribed Image Text:

PCB, weight 3N A Acceleration 100g A 13 mm Section A-A -250 mm 0 to = 0.1 s (b) (a) FIGURE 4.23 A cantilever subjected to an acceleration pulse.