Abstract: Using near-half-cylindrical Linear Shaped Charges (LSCs) and detonating it at the center of two end sections simultaneously, the linear explosively-formed penetrators (LEFP) is investigated, based on a detonation wave collision. The theoretical pressure of a detonation wave collision is calculated first, which is described as the LEFP critical pressure for formation. Then, the LEFP is numerically simulated using LS-DYNA. Furthermore, pulsed X-ray LEFP forming experiments as well as LEFP penetration experiments under different stand-off are performed. Based on the results obtained from both the numerical simulation and the experiments, the formation mechanism of the LEFP is explained clearly. The theoretical analysis, numerical simulation and experimental results demonstrate that near-half-cylindrical LSCs can form a large L/D ratio LEFP based on a detonation wave collision.