Fiber composite body and method for producing a fiber composite body
A fiber composite body, in particular a structure stiffening element, has a number of struts which are formed by reinforcing fibers which are embedded in a polymer matrix and which in a region of the respective strut run substantially parallel to one another. The struts are arranged in a truss-like profiled structure which is produced by winding or intertwining the reinforcing fibers.
1. A fiber composite body, comprising
a plurality of struts, wherein the plurality of struts are formed by reinforcing fibers which are embedded in a plastic matrix and which run substantially parallel to one another in a region of a respective strut;
wherein the plurality of struts are arranged in a profile structure which is formed by wrapping or stitching the reinforcing fibers; and
an attachment region where a first strut of the plurality of struts intersects with a second strut of the plurality of struts, wherein the attachment region has a fastening element around which the reinforcing fibers extend;
wherein the fastening element has a fastening opening which is surrounded by a sleeve which forms part of an insert and wherein the reinforcing fibers are guided around the insert;
wherein the insert has an integrally formed plate;
wherein the insert has a first extension which is connected to the plate at a first distance from the sleeve and a second extension which is connected to the plate at a second distance from the sleeve, wherein a fraction of the reinforcing fibers belonging to the first strut is crossed with another fraction of the reinforcing fibers belonging to the first strut between the first extension and the sleeve, and wherein a fraction of the reinforcing fibers belonging to the second strut is crossed with another fraction of the reinforcing fibers belonging to the second strut between the second extension and the sleeve.
2. The fiber composite body according to claim 1 , wherein the profile structure is formed by wrapping the reinforcing fibers and then pressing the wrapped reinforcing fibers.
3. The fiber composite body according to claim 1 , wherein the reinforcing fibers are endless fibers and wherein at least a fraction of each of the endless fibers extends over respective adjacent struts of the plurality of struts.
4. The fiber composite body according to claim 1 , wherein, in a transition region between a first strut and a second strut of the plurality of struts, at least one fraction of the reinforcing fibers leaves a bundle orientation of the first strut and transitions into a fiber reinforcement of the second strut.
5. The fiber composite body according to claim 1 , wherein a respective connecting point is provided between interconnecting struts of the plurality of struts and wherein at the connecting point the respective reinforcing fibers of the interconnecting struts are formed as respective reinforcing fiber bundles that penetrate one another.