| 제목 |
판스프링의 이력특성이 대형트럭의 조종성능에 미치는 영향에 관한 연구 |
| 분야 |
차량동역학 및 제어 |
| 언어 |
Korean |
| 저자 |
오재윤(전북대학교), 문일동(대우상용차) |
| Key Words |
Multi-leaf spring(MLS, 다판스프링), Tapered leaf spring(TLS, 테이퍼 판스프링), Lateral acceleration(횡 가속도), Roll angle(롤 각), Steering wheel angle(조향휠 각), Double lane change(이중 차선 변경), Handling(조종성능) |
| 초록 |
This paper performs static and dynamic tests of a multi-leaf spring and a tapered leaf spring to investigate their hysteretic characteristics. In the static test, trapezoidal input load is applied with 0.1 Hz excitation frequency and with zero initial loading conditions. In the dynamic test, sinusoidal input load is applied with five excitation amplitudes and three excitation frequencies. In these tests, static and dynamic hysteretic characteristics of the multi-leaf spring and the tapered leaf spring are compared, and, the effects of excitation amplitudes and frequencies on dynamic spring rate are also shown. In this paper, actual vehicle tests are performed to study the effects of hysteretic characteristics of the large-sized truck's handling performance. The multi-leaf spring or the tapered leaf spring is used in the front suspension. The actual vehicle test is performed in a double lane change track with three velocities. Lateral acceleration, yaw rate and roll angle are measured using a gyro-meter located at the mass center of the cab. The test results showed that a large-sized truck with a tapered leaf spring needs to have an additional apparatus such as roll stabilizer bar to increase the roll stiffness due to hysteretic characteristics. |
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