As the confrontation of football matches becomes more and more fierce, injuries appear more and more frequently.

In order to prevent players from being injured, a French brand WizWedge has integrated a variety of patented technologies, according to the player’s physical characteristics and injury history to customize the sneaker configuration. Through customized shoe parts, WizWedge could effectively protects the athletes from muscles, hamstrings, joints and other injuries caused by various sports postures. It also optimizes the player’s performance in training, relieves muscle soreness and accelerates fatigue recovery.

It looks like so cool! But this custom-made shoe, including the complex sole cushioning structure, is too expensive and complicated to produce with traditional craftsmanship, however, 3D printing technology makes it all functional. Nowadays, many companies have begun to try to make shoes by 3D printing.

There are differences in the gait and the shape of the arch when different people walk. The shoes that are “universal” do not perfectly support the soles of the feet to make the pressure average distribution. Professional athletes have higher requirements for the fit of shoes, and mass-produced shoes are far from meeting the demand. In this regard, Simright launched a customized design solution for the soles, which is customized to generate the lattice structure of the sole or insole through topology optimization for different people’s needs. The design model can be directly output through the 3D printing device.

First, the foot is scanned in three dimensions to establish a finite element model of the foot structure. At the same time, tested the pressure distribution of the sole to obtain the data of the plantar pressure distribution, finally, use the data to load boundary condition for the subsequent optimization of the insole or sole topology.

The initial topological

optimization space of the insole or sole is constructed with reference to the scanned plantar shape. At the same time, the optimized constraints are introduced to effectively reduce the peak stress of the sole while ensuring that the sole reaches the light weight requirement.

Since the results of topology optimization calculations in the past are very irregular, commercial applications are difficult. The newly developed dot matrix optimization feature made by Simright can make up for this deficiency. Not only can the sole structure and material density distribution of the sole and insole be calculated, but also the lattice structure of the sole can be optimized. For different load areas, the requirements for the elasticity of the insole are satisfied by optimizing the thickness of the dot matrix. At the same time, the popular 3D printing technology can be perfectly combined with topology optimization. The optimized sole and insole structure can neglect manufacturing constraints and be directly output by the 3D printing device. Realized the design, optimization and manufacturing integrated solution for the sole and insole customization.

The customized sole or insole not only effectively reduces the peak stress of the sole, makes the stress distribution more uniform, but also meets the requirements of lightweight, which can perfectly support the athlete’s sole, arch and heel.

This customized sole or insole is also very suitable for medical use. For example, diabetic foot is one of the most serious complications in the late stage of diabetes. Because the early symptoms of diabetic foot are mostly due to abnormal numbness caused by neuropathy and vascular disease, it is particularly easy to cause skin damage and ulceration. On the other hand, blood can’t be supplied normally nutrition, result in ulcers are difficult to heal for a long time, and even lead to more serious consequences such as systemic infection. The risk of amputation in diabetic patients is 25 times that of the average person. All over the world, 70% of amputees are diabetic. This customized diabetes shoe can effectively protect patients with diabetic foot. In flat areas, post-operative rehabilitation, and other areas, customized soles or insoles can help the hospital to solve some of the problems in existing medical solutions.