The present application relates to a kind of lightweight biomimetic discontinuous
fiber spiral composite protective structure, belong to lightweight protective structure design technical field.The lightweight high-strength high-
toughness biomimetic discontinuous
fiber spiral composite protective structure of the present application is stacked by unit intermittent
fiber fabric according to different arrangement angles and arrangement ways, under the condition of local
stress concentration in relaxation layer,
shear stress is distributed to the intermittent connecting part in each layer, the concentration of
interlaminar shear stress is relieved, using the
interlaminar shear stress distribution mechanism of the
composite material makes crack frequently deflect when it bears load, can
delay material failure and destruction, greatly improve the bearing and
energy absorption capacity of the composite protective structure.