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StructureHelperLogics/NdmCalculations/Cracking/TensileAreaLogicSP63.cs

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+using LoaderCalculator.Data.Materials;
+using LoaderCalculator.Data.Matrix;
+using LoaderCalculator.Data.Ndms;
+using LoaderCalculator.Logics;
+using StructureHelperCommon.Models.Forces;
+using StructureHelperCommon.Services.Forces;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperLogics.NdmCalculations.Cracking
+{
+    public class TensileAreaLogicSP63 : ITensileAreaLogic
+    {
+        const double maxConcreteFactor = 0.5d;
+        const double minConcreteFactor = 0.1d;
+        const double minRebarFactor = 3d;
+        private static IStressLogic stressLogic => new StressLogic();
+        public IEnumerable<INdm> NdmCollection { get; set; }
+        public IStrainMatrix StrainMatrix { get; set; }
+
+        public double GetTensileArea()
+        {
+            var rebarCollection = NdmCollection
+                .Where(x => x is RebarNdm);
+            var rebarArea = rebarCollection.
+                Sum(x => x.Area * x.StressScale);
+            var concreteCollection = NdmCollection
+                .Where(x => x.Material is ConcreteMaterial);
+            var concreteArea = concreteCollection
+                .Sum(x => x.Area * x.StressScale);
+            var concreteTensileArea = concreteCollection
+                .Where(x => stressLogic.GetTotalStrainWithPresrain(StrainMatrix, x) > 0d)
+                .Sum(x => x.Area * x.StressScale);
+            
+            concreteTensileArea = Math.Max(concreteTensileArea, rebarArea * minRebarFactor);
+            concreteTensileArea = Math.Max(concreteTensileArea, concreteArea * minConcreteFactor);
+            concreteTensileArea = Math.Min(concreteTensileArea, concreteArea * maxConcreteFactor);
+
+            return concreteTensileArea;
+        }
+    }
+}