What is the Suitable Impact Speed ​​of the Rock

What is the peak impact force at different impact speeds?

Time–history curve of impact force at different impact speeds. At an impact velocity of 3.45 m/s, the corresponding peak impact force measured 16.37 kN. Similarly, at 2.83 m/s impact velocity, the peak impact force was 12.85 kN, and at 2.29 m/s impact velocity, the peak impact force was recorded at 10.56 kN. 4.2.

What is the impact velocity of a Rolling Stone?

The impact velocity of a rolling stone is a critical parameter that governs the kinetic energy it possesses prior to collision. According to the principle of conservation of energy, the kinetic energy is transferred to the bridge pier upon impact.

Does impact strain rate affect dynamic mechanical properties of jointed rocks?

Su et al. 11 used 3-d printing to prepare jointed rock specimens and explored the influences of impact strain rate on the dynamic mechanical properties of jointed rocks. Some researchers used an improved SHPB experimental system to study the dynamic mechanical behavior of rocks to good effect.

How does high-speed impact affect rock breaking?

As a result, under the lateral pressure applied by drill bit, rock breaking becomes more easily initiated. Therefore, while high-speed impact can achieve a larger volume of rock breaking, the energy consumed also increases accordingly.

How is the impact force of a Rolling Stone measured?

The impact force of the rolling stone was measured using a strain-based impact force sensor connected to a half-bridge configuration. Additionally, the displacement of the pillar top was measured using the YHD-100 dynamic displacement sensor, also connected to a 1/4 bridge configuration.

Does impact angle affect collision force between a Rolling Stone and a bridge pier?

1. The research findings delineate the pivotal role of impact velocity, impact angle, and impact position on the collision force between a rolling stone and a bridge pier.