NAME_1. 6 shows that system vibration changes from period-doubling bifurcation to chaos with the increase of brake pressure, which indicates that system vibration modes can change with the variation of brake pressure. NAME_1. 7(a)–(e) shows the phase, Poincaré and spectrum diagrams of five stick-slip vibration mode, which represent double-period, four-period, eight-period, and chaos, respectively. Write your response with exactly 2 paragraphs, separated with the markdown divider: ***.
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